You are given a science question (easy-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]: Which of the following properties best describes a material's ability to resist scratching?  
 (A) weight (B) flexibility (C) length (D) hardness
[A]: D


[Q]: Which characteristic of sound makes it possible for bats to fly in the dark without hitting any objects?  
 (A) refraction (B) reflection (C) conduction (D) amplification
[A]: B


[Q]: The Statue of Liberty was built in France and then taken apart into 350 pieces for shipping. When the pieces arrived in New York, the statue was put together. Which statement describes the relationship between the mass of the 350 pieces and the mass of the whole statue?  
 (A) The mass of the pieces is greater than the mass of the statue. (B) The mass of the pieces is the same as the mass of the statue. (C) The mass of the statue is greater than the mass of the pieces. (D) The mass of the statue is not related to the mass of the pieces.
[A]:
B