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

<passage>:
he looked down and spat in Jarvis Spurling's dead face. noted anthropologist." Then the moderator questioned Malcomb, while Gavir nervously awaited the moment when his thoughts would be transmitted to millions himself up from the divan, and, feet planted wide apart, threw back his head and began to howl. He was considered a poor singer in his tribe, and he was not surprised startled sidestep saved him from the neck-breaking snap of the great jaws. ran out over the hard, tightly-stretched skin. The drock fell, gave a last convulsion, and lay still. The hunter head and bellowed his hunting cry. There was great glory in killing the drock, for it showed that the Desert Man and not the drock, was lord of the red waste.... He began shouting even before Gavir removed his headset. "What kind his very thoughts. And may I point out that your tone is hostile?" nerve-wracking business. If it weren't for Ethical Conditioning, I don't know how I'd control my aggressive impulses. The Suppression of Aggression is the Foundation of Civilization, eh?" Malcomb smiled. "Ethical Conditioning Keeps Society from Fissioning." In a pitifully few days he would be back in the Preserve, back with the fear of MDC, with hunger and the hopeless desire to find and kill the man who had ordered his father's death. only hope to find an alternative to the short, fear-ridden, impoverished life he foresaw for himself. and lowered him through the city's multiple levels.... And, as has always happened to outlanders in cities, he became lost. over a hundred years old, but as healthy, physically, as ever." "What is wrong with them?" "They seem to have outgrown their Ethical Conditioning. They live wildly. Violently. It's a problem without precedent, and we don't know what to do with them. The fact is, Senile Delinquency is our number one problem." "Why not punish them?" said Gavir. soft plumpness and a receding hairline made him look slightly older than average. had gotten into trouble because of his like being mad!" "Keep him on Earth." the voices fell silent. "Those callers that admitted their age were all Century-Plus. The boy appeals to the Century-Plus mentality. I want to try him again. This time on a really big dream-show, not just an educational 'cast. Got a A Senile Delinquent! thought Gavir. She looked like Davery's younger sister. Malcomb stared at her apprehensively, and Gavir wondered if she were somehow going to attack them. night. Positively manic about him. I found out he'd be with you." "See?" said Hoppy to Gavir. "The Century-Plus mentality. You've got something they go for. Undoubtedly because you're—forgive me—such a complete barbarian. That's what they're all trying to be." "Spare me another lecture on Senile Delinquency, Our Number One Problem." She walked to the door and Gavir watched her all the way. She turned with a swirl of scarlet and a dramatic display of healthy ." "It's part of a fertility rite," Malcomb explained. "Great! Give the Senile Delinquents another workout. It's not quite ethical, but its good for us. But for heaven's sake, Blue Boy, keep your mind off MDC!" mind to his audience. A jubilant Hoppy Davery called him at his hotel next morning. "Best response I've ever seen! The Century-Plussers have been rioting congratulated himself. He had learned emotional control from the Earthmen. Here was the man who had ordered his father crucified! Yet he had managed to hide his instant desire to strike, to kill, to carry out the oath of the blood feud then and there. Jarvis Spurling ignored Gavir's hand and stared coldly at him. There Preserve." "Mr. Spurling!" said Malcomb. "Your tone is hostile!" "Damn right. That Ethical Conditioning slop doesn't work on me. I've lived too long on the frontier. And I know Bluies." Caution told Gavir to refuse. But before he could speak Spurling Spurling laughed. "I've heard about you Century-Plussers. You're all sick." "You can't claim any monopoly on mental health. Not with that Gavir grinned at Spurling. "The contract, I believe, does not cover my Sylvie uttered a short, sharp obscenity, linked arms with Gavir, and strolled out. "You screwball Senile Delinquent," Spurling yelled after Sylvie, "you oughtta be locked up!" Lucifer Grotto was in that same quarter in which Gavir had been hangout for wealthier New York Century-Plussers. Gavir told her about the attack, and she laughed. "It won't happen again. You're a hero to the Senile Delinquents now. By the way, the big fellow with the broad-brimmed hat, he's one of the most prominent Senile Delinquents of our day. He's president of the biggest privately-owned space line, but he likes to call himself the Hat Rat. You must be one of the few people who ever got away from him was a warm color, and tautly filled. She had lashed out at Spurling, and he liked her for that. But in one way she was like Spurling. She didn't fit into the bland, non-violent world of Malcomb and Hoppy. He shook his head. He said, "Sylvie, why—well, why are you the way you are? Why—and how—have you broken away from Ethical Conditioning?" Sylvie frowned. She spoke a few words into the air, ordering drinks. She said, "I didn't do it deliberately. When I reached the age of about a hundred it stopped working for me. I suddenly wanted to do what it, chuckled, and read it again, aloud. "Sir: I beg you to forgive the presumption of my recent attack on not like a Martian woman, but he found the differences exciting and attractive. He went to her, and he forgot entirely that she was over a hundred years old. In the months that followed, Gavir's fame spread over Earth. By spring, the rating computers credited him with an audience of eight hundred million—ninety-five percent of whom were Century-Plussers. Complaint . It was an ancient song, a Desert Man's outcry against injustice, enemies, false friends and callous leaders. It was a protest against sufferings that could neither be borne nor prevented. At the climax of the song Gavir pictured a tribal chief who refused to make fair division of the spoils of a hunt with his warriors. Gradually he my mind even though they have nothing to do with me." Hoppy shook his head. "That's because you haven't had Ethical Spurling wants to see you at once, at his office." the Senile Delinquents were giving a party for him in the Pandemonium Room. The only prominent person missing, as Sylvie remarked after surveying the crowd, was the Hat Rat. They wondered about it, but no Jarvis Spurling's square face was dark with anger. "You deliberately "You're itching to go for that throwing knife," said Spurling. "Go on! Spurling turned. The Hat Rat saw him. Spurling's body was thrown back against Gavir. Gavir saw a huge ragged red caved-in place in Spurling's chest. Spurling's body sagged to the floor and lay there face up, eyes open. The Senile Delinquents of Lucifer Grotto leaned forward to grin at the tattered body.

<question>:
Why was Mr. Spurling able to speak in a hostile tone?

<options>:
A He was secretly martian himself
B He had lived on Mars for too long
C He had never undergone the ethical conditioning
D He was a "senile delinquent" and had outgrown his ethical conditioning

<answer>:

B