Detailed Instructions: You are given a science question (hard-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
Q: A sample of an unknown substance takes the shape of its container. Which question needs to be answered to provide the additional information required to determine the state of the sample?
(A) Is it transparent? (B) Is it a hazardous sample? (C) What is the temperature of the substance? (D) Will it expand to the volume of a larger container?
A:
D