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'.

[EX Q]: Question: Television provides some ***. What is one way that *** has *** ***?  (A) Television manufacturing uses many toxic chemicals. (B) The ads on television show many popular toys that kids want. (C) Television provides information about current weather conditions. (D) The electricity used to run televisions is one use of natural resources.
[EX A]: C.

[EX Q]: Question: Which of the following is an *** of a *** *** between *** ***?  (A) Birds live in a maple tree. (B) A butterfly carries away pollen on its legs. (C) A puppy has intestinal worms. (D) A fungus feeds on a rotting log.
[EX A]: E.

[EX Q]: Question: *** precaution must *** *** *** *** *** making 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.
[EX A]:
C.