input: Text: MUTINEER By ROBERT J. SHEA For every weapon there was a defense, but not against the deadliest weapon—man himself! Raging, Trooper Lane hovered three thousand feet above Tammany Square. The cool cybrain surgically implanted in him was working on the problem. But Lane had no more patience. They'd sweat, he thought, hating the chill air-currents that threw his hovering body this way and that. He glared down at the three towers bordering on the Square. He spat, and watched the little white speck fall, fall. Lock me up in barracks. All I wanted was a little time off. Did I fight in Chi for them? Damn right I did. Just a little time off, so I shouldn't blow my top. Now the lid's gone. He was going over all their heads. He'd bowled those city cops over like paper dolls, back at the Armory. The black dog was on Lane's back. Old Mayor himself was going to hear about it. Why not? Ain't old Mayor the CinC of the Newyork Troopers? The humming paragrav-paks embedded beneath his shoulder blades held him motionless above Newyork's three administrative towers. Tammany Hall. Mayor's Palace. Court House. Lane cursed his stupidity. He hadn't found out which one was which ahead of time. They keep Troopers in
  Question: What is a cybrain?
  
   (A) A cybrain is a cybernetic brain. The cybrain is in control of the Newyork Special Troops, like a hive mind.
   (B) A cybrain is a dispatch system that sends the Newyork Special Troops on their assignments.
   (C) A cybrain is a cybernetic brain. Cybrains are implanted in soldiers to make them the ultimate weapons.
   (D) A cybrain is an AI handler. Each of the Newyork Specail Troops has a cybrain which is their only contact to the command center.
  Answer:
output: A cybrain is a cybernetic brain. Cybrains are implanted in soldiers to make them the ultimate weapons.