TASK DEFINITION: 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.
PROBLEM: Which of the following has the least momentum?  
 (A) a 0.5 kg mass with a 1000 m/s velocity (B) a 1 kg mass with a 100 m/s velocity (C) a 10 kg mass with an 11 m/s velocity (D) a 100 kg mass with a 2 m/s velocity

SOLUTION: B

PROBLEM: Two students are asked to make a chart on the electromagnetic spectrum. Reading left to right, one student's chart shows the spectrum from gamma rays to radio waves, while the other student's chart shows the opposite. If the teacher says that both charts are correct, then  
 (A) it does not matter how the students label their charts. (B) there are multiple ways to organize information. (C) the waves have the same properties. (D) the students are being encouraged to do their work.

SOLUTION: B

PROBLEM: Apple trees can live for many years, but bean plants usually live for only a few months. This statement suggests that  
 (A) different plants have different life spans (B) plants depend on other plants (C) plants produce many offspring (D) seasonal changes help plants grow

SOLUTION:
A