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: Real airplanes have round engines and ____ wings.\Question: Choose the right answer from options given a) four b) six c) three d) two

Output: d


Input: Consider Input: Babies show an interest in solid foods when they are approximately four to ____ weeks old.\Question: Choose the right answer from options given a) nine b) eight c) five d) six

Output: c


Input: Consider Input: Light breeds starrt to lay at about five months and the heavier breeds at about ____ months.\Question: Choose the right answer from options given a) four b) nine c) six d) five


Output: c