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: A manufacturer wants to *** a *** for *** *** that does not *** *** and is ***, ***, and ***. Which of the following is the *** *** to use to make the container?  (A) glass (B) metal (C) paper (D) plasti.
[EX A]: E.

[EX Q]: Question: *** of *** *** *** ___.  (A) when the particles of the substance are able to slide past one another (B) at 0Â°C (C) when a liquid changes to a solid, regardless of temperature (D) when energy is added to a substanc.
[EX A]: E.

[EX Q]: Question: Sandra puts some *** *** into an *** box. She *** half the *** with a piece of ***. She then places the *** *** on a *** ***, and *** the *** *** *** under the ***. The *** *** are most likely *** to which of the following?  (A) air pressure (B) bright light (C) wind (D) fo.
[EX A]:
E.