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

<passage>:
They were still separated, two on one side of the airlock, two on the other. "I can see it," he said. "It's getting redder. It's ... it's ... melting, yes. Melting down at the bottom a little. Now it's falling over to one side and laying on the air tank. The air tank is getting red, too. I'm afraid ... it's weakening it.... Redder. Oh, oh." the U.S. copyright on this publication was renewed.] General Finogenov notified Major Winship that the underground blast was scheduled for the following morning. "What?" said Capt. Lawler. bright flare from inside the dome, and a great, silent tongue of flame lashed through the airlock and rolled across the lunar surface. The table was sent tumbling. The flame was gone almost instantly. "There went the air," Capt. Lawler commented. Major Winship attempted unsuccessfully to communicate with Base "We got T-Trouble," said Lt. Chandler. "Boom! Boom!" said Major Winship in exasperation. emergency watch this morning," he explained to the other Americans. Americans. "How are we going to know when it's over?" No one bothered to respond. They sat for a while in silence while the shadows evaporated. One by one they clicked on their cooling systems. for several minutes. "Ah, it's all Russian. Jabbering away. I can't tell a thing that's going on." In the airless void of the moon, the blast itself would be silent. A moth's wing of dust would, perhaps, rise and settle beyond the horizon: no more. "Static?" "Nope." probably over by now." "I'll try again," Major Winship said and switched to the emergency channel. "Base Gagarin? Base Gagarin?" He crossed with the floating moon-motion to the airlock and entered, closing the door behind him. The darkness slowly filled with air, and the temperature inside the suit declined steadily. At the proper moment "Charlie! Charlie!" They began to get the static for the first time. It crackled and He peeled back a marker and let it fall. Air currents whisked it away and plastered it against a riveted seam of the dome. It pulsed as though it were breathing and then it ruptured. Major Winship moved quickly to cut out the emergency air supply which had cut in automatically with the pressure drop. "You guys wait. It's There was a splatter of static. "Damn!" Major Winship said, "they should have made these things more flexible." to slide downward, then it fell away completely and lay limply on the floor. repeatedly assuring you there was no danger of a quake—and then to energized the circuits. There was a puzzled look on his face. He leaned his helmet against the speaker and then shook his head sadly. "We can't hear anything without any air." Major Winship looked at the microphone. "Well, I'll just report and—" They huddled over the instruction sheet. service." Major Winship said dryly, "Never mind. I notice it hardens on contact with air." air must already have leaked into this one. It's hard as a rock. A gorilla couldn't extrude it." "How're the other ones?" asked Major Winship. "The only way you can check is to extrude it," Lt. Chandler said, "and if it does extrude, you've ruined it." "That's that," Major Winship said. "There's nothing for it but to yell help." II Capt. Lawler and Lt. Chandler took the land car to Base Gagarin. The cursed twice during the operation. "I'd hate to live in this thing for any period." "You told me," Capt. Wilkins said. After a moment, Major Winship said bitterly, "To hell with the Russian engineer." "If you've got all that power...." "Okay?" "Okay," Major Winship gestured. They roused Earth. "This is Major Charles Winship, Commanding Officer, Freedom 19, the American moonbase." "This is the Cape. Come in, Major Winship." "What's wrong?" came the worried question. In the background, he heard arm tangled a cable and jerked the speaker jack loose. Major Winship could no longer hear the alarmed expressions from the Cape. The effort was not entirely subvocal, since he emitted a little gasping cry in involuntary realism. This, in the course of some 90 seconds, was transmitted to Earth. Capt. Wilkins's lips were desperately forming the word "Leak?" Air, Major Winship said silently. Leak? Bottle! Bottle! Bottle! It was a frog-like, unvocal expletive. "... Freedom 19! Hello, Freedom 19! Come in!" "We're all right. A-Okay." Major Winship, mindful of the extent of his potential audience, took a deep breath. "Earlier this morning, the Soviet Union fired an underground atomic device for the ostensible The turn was uncomfortably tight and complicated by the restraining cables. Capt. Wilkins began replacement of the air bottle. "These protests have proved well founded," Major Winship continued. "Immediately following the detonation, Freedom 19 was called on to withstand a moderately severe shifting of the Lunar surface. No personnel were injured and there was no equipment damage." Capt. Wilkins tapped his shoulder to indicate the new air bottle was "The Soviet Union," came the reply, "has reported the disturbance and has tendered their official apology. You want it?" "It can wait until later. Send it by mail for all I care. Vacuum has destroyed our organic air reconditioner. We have approximately three weeks of emergency air. However, Base Gagarin reports no damage, so that, in the event we exhaust our air, we will be able to obtain the necessary replacement." The wait of a little better than three seconds for the response gave "Let us hear from you again in ... about three hours. Is the leak repaired?" "The leak has not yet been repaired. Over and out." Methodically, Capt. Wilkins set about disconnecting the major from the transmitter. to get on the emergency channel to ask you to charge the air bottle. I never felt so ... idiotic is not quite strong enough ... there for a minute in my whole life. I didn't know how much emergency air was left, and I thought, my God, I'll never live this down. All the hams in the world listening, while I try to explain the situation. I could see the nickname being entered in my files: aka. The Airless Idiot. I tell you, that was rough." III was a fifty-five gallon drum. The airlock to Freedom 19 was open. "What is that ?" asked Major forth through the airlock. At that time, it was apparent the table was interposing itself. Lt. Chandler tried to dismantle the table. "Damn these suits," he said. "No!" Major Winship snapped. "Now what, Skip? The instructions aren't in English." just a little bit, Finogenov said. An hour or so, maybe." "I hope this doesn't set on exposure to air." "No," Capt. Lawler said. "It sets by some kind of chemical action. General Finogenov wasn't sure of the English name for it. Some kind of plastic." an epoxy! Let's get out of here." "Huh?" "Out! Out!" He and the Major reached the airlock at the same time and became temporarily engaged with each other. Movement was somewhat ungainly in the space suits under the best of conditions, and now, with the necessity for speed, was doubly so. The other two crashed into them from behind, and they spewed forth from the dome in a tangle of arms and legs. like shrapnel." They obeyed. "What—what—what?" Capt. Lawler stuttered.

<question>:
What happened to cause panic during the communicaton between Freedom 19 and the Cape?

<options>:
A They lost connection due to the leak.
B The speaker became unplugged.
C There was another underground atomic device fired.
D The organic air reconditioner was destroyed.

<answer>:

B