Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').

Input: Consider Input: Nematodes occur in ____ general forms.\Question: Choose the right answer from options given a) nine b) two c) seven d) ten

Output: b


Input: Consider Input: Antibodies contain ____ pairs of protein chains.\Question: Choose the right answer from options given a) no b) two c) nine d) zero

Output: b


Input: Consider Input: Solvent abuse kills ____ times more people every year than the dreadful drug ecstasy.\Question: Choose the right answer from options given a) eight b) nine c) five d) six


Output: a