In this task, you need to answer basic science questions. For each question, several terms are intentionally masked with ***. This masking can cover very few or many of the question words. Clearly, if masked terms are important, the modified question will be impossible to answer. Please indicate the correct answer with one of the following responses: "A", "B", "C", "D" or "E". While "A"-"D" correspond to the answer options provided in the input, "E" represents "I don't know" for questions that do not provide enough information. Respond via "E" if the question is not answerable. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E'.

Input: Consider Input: Question: Which *** below would be the best way to determine if an egg, plastic foam, a piece of wood, or a candle would *** on water?  (A) observing each object in water (B) measuring the size of each object (C) calculating the weight of the objects (D) comparing the shapes of the object.

Output: A.


Input: Consider Input: Question: In ***, the *** *** *** in  (A) the intestine, with squeezing. (B) the mouth, with chewing and saliva. (C) the stomach, with churning and acid. (D) the esophagus, with pushing towards the stomach.

Output: E.


Input: Consider Input: Question: *** *** *** *** *** *** *** *** *** ***  (A) the size of the guitar. (B) the metal on the guitar. (C) the wood on the guitar. (D) the vibrations of the string.


Output: E.