In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

[EX Q]: Which most likely requires the aid of specialized tissues at the ends of stems? (A) human assisted space travel (B) the quick growth of bamboo (C) cats digging with their claws (D) the slow growth of mammals
[EX A]: B

[EX Q]: Someday, the ground under the pile of rotting grain in the field will be (A) barren (B) a hole (C) more fertile (D) less fertile
[EX A]: C

[EX Q]: Tearing an object changes its what? (A) temperature (B) configuration (C) moistness (D) elements
[EX A]:
B