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: Sand and iron particles that are similar in size and color are mixed together in a beaker. What would be the best method of separating the particles?
(A) Use tweezers to separate them. (B) Use a magnet to separate them. (C) Add water to the mixture. (D) Pour the mixture into a filter.
A:
B