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: A student is *** at *** using a *** ***. What about the *** can *** be *** with the *** ***?  (A) different colors of insect bodies (B) how insects protect themselves (C) type of eyes insects have (D) size of the insect.

Output: E.


Input: Consider Input: Question: *** precaution *** *** *** *** *** *** *** observations *** *** Sun?  (A) Use only new equipment. (B) Use a very strong telescope. (C) Project image onto a piece of cardboard. (D) Look at the Sun only in the morning.

Output: C.


Input: Consider Input: Question: Which would be the *** *** to *** the *** of a ***?  (A) Meter stick (B) Empty graduated cylinder (C) Graduated cylinder with water (D) Triple beam balanc.


Output: E.