Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
BY ALEXEI PANSHIN The ancient rule was sink or swim—swim in the miasma of a planet without spaceflight, or sink to utter destruction! [Transcriber's Note: This etext was produced from Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] I lost and just beginning to enjoy it when Jimmy Dentremont came over to me. He's red-headed and has a face that makes him look about ten. An intelligent runt like me. scrawniness to last much longer. Mother is very good looking. In the meantime, I've got brains as a consolation. leave that way, but George thinks it's fun to be a hot pilot. Thinking it over, I was almost sorry I'd been stinking to Jimmy D. He's the only competition I have my own age. The trouble is, you don't go partners with the competition, do you? Besides, there was still that debate a little before they dropped us there, but they decided it was all right in the end. It didn't make any practical difference to us kids because they never tell you anything about the place they're going to drop you. All I knew was the name. I wouldn't have known that much a piece of fluff and break your neck. There are vegetables everywhere and little grubby things just looking for you can think of anything creepier than that, you've got a real nasty imagination. Worst of all, planets stink. Every single one smells—I've thousand square miles and any time it gets on your nerves you can go up a level or down a level and be back in civilization. When we reached Tintera, they started dropping us. We swung over the In a minute we were airborne again. I wondered if I would ever see Jimmy—if he would get back alive. It's no game we play. When we turn fourteen, they drop us on the nearest colonized planet and come back one month later. That may sound like fun to you, but a lot of us never come back alive. Don't think I was helpless. I'm hell on wheels. They don't let us grow for fourteen years and then kick us out to die. They prepare us. They do figure, though, that if you can't keep yourself alive by the time you're fourteen, you're too stupid, foolish or unlucky to be any use to from decaying mentally and physically, and this is it. And it helps to keep the population steady. found at the end of the month, saddle and cinches, food and clothes. have anything to do with Jimmy. I just couldn't stand to put off the bad moment any longer. and in just a moment it was gone. Its gray-blue color was almost the color of the half-overcast sky, so I was never sure when I saw it last. II if it's really going to come back. But I lived through it—one day in thirty gone. I rode in a spiral search pattern during the next two days. I had three animals. I shot one small one and ate it. It turned out to taste pretty of horses and both narrow and wide wheels. Other tracks I couldn't identify. One of the smartest moves in history was to include horses when they dropped the colonies. I say "they" because, while we did the draft animals. could have been substituted but, even if they had, they would have had to be domesticated from scratch. That would have been stupid. I'll bet that half the colonies would have failed if they hadn't had horses. were five men on horseback herding a bunch of the ugliest creatures They were green and grotesque. They had squat bodies, long limbs and knobby bulges at their joints. They had square, flat animal masks for made a wordless, chilling, lowing sound as they milled and plodded along. men on horseback had guns in saddle boots. They looked as nervous as one wheeled his black horse and rode back toward me. was why I kept riding. He said, "What be you doing out here, boy? Be you out of your head? There be escaped Losels in these woods." I told you I hadn't finished filling out yet, but I hadn't thought it was that bad. I wasn't ready to make a fight over the point, though. One of the other outriders came easing by then. I suppose they'd been watching us all the while. He called to the hard man. "He be awfully small, Horst. I doubt me a Losel'd even notice him at all. We mought as well throw him back again." that mean. I decided he just creatures, I said, "If you want your rifles, you can go back and get the creatures still while one beat a dust-raising retreat down the road. I put this episode in the "file and hold for analysis" section in my I even convince myself that I'm hell on wheels. III the green creatures, which surprised me since the ones I'd seen before But it relieved me. I thought they might have been eating them or four children. It was the most foul thing I've ever seen. It struck me then—these people were Free Birthers! I felt a wave of nausea and I closed my eyes until it passed. The first thing you learn in school is that if it weren't for idiot and criminal people like these, Earth would never have been destroyed. The evacuation would never have had to take place, and eight billion people wouldn't have died. There wouldn't have been eight billion people. But, no. They bred and they spread and they devoured everything in their path like a cancer. They gobbled up all the resources that Earth had and crowded and shoved one another until the final war came. I am lucky. My great-great-grandparents were among those who had enough Who? Make the mistake of bracing a fellow like Horst and you might wind poor girl's position. All the little girl had to help her were the handkerchief, the comb and the pearl that she had inherited from her dear dead mother. But, as it turned out, they were just enough to one, Horst. We should have been here hours ago. It be your fault we're Horst growled a retort. I decided that it was time for me to leave the campfire. I got up and eased away as Horst and his men came up to the leave. I never got the chance. shoulder and I was swung around. "Well, well. Horst, look who we have here," he called. It was the one who'd made the joke about me being beneath the notice of a Losel. He was alone with me now, but with that call the others would be up fast. I brought the saddle around as hard as I could and then up, and he The other one didn't move. "Get going, Jack," Horst said in a menacing with it." He said, "Look, boy. You may not know it, but you be in a lot of trouble. So don't give me a hard time." "The courts won't let you get away with this," I said. I'd passed a courthouse in the town with a carved motto over the doors: EQUAL JUSTICE UNDER THE LAW or TRUTH OUR SHIELD AND JUSTICE OUR SWORD or something stuffy like that. He laughed, not a phony, villian-type laugh, but a real laugh, so I knew I'd goofed. "Boy, boy. Don't talk about the courts. I be doing you a favor. I be taking what I can use of your gear, but I be letting you go. You go to court and they'll take everything and lock you up besides. I be leaving you your freedom." Ships," Horst said. "That be enough. They already have one of you brats that over to me." Horst made a disgusted sound. "Don't make any noise," I said, "or you'll fry. Now hand it over." Horst stalked over and got the signal. He dropped it on the ground and said in a voice far colder than mine could ever be, because it was natural and mine wasn't, "The piece be yours." Then he tromped on it until it cracked and fell apart.

<question>:
What is the implied name of the green creatures Horst and his gang are herding?

<options>:
A Free Birthers
B Slims
C Squat Plodders
D Losels

<answer>:

D