Question: For which of the following statements are both the price change and quantity change determinable (for a particular good)?
A: Both the supply of and the demand for the good decrease.
B: Both the supply of and the demand for the good increase.
C: The supply increases and the demand for the good decreases.
D: None of the above.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. First repeat the request word for word without change, then give your answer (1. do not say any words or characters before repeating the request; 2. the request you need to repeat does not include this sentence).
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