Single/multi-choice problem: Which of the following solutions is better for the following goal:
Defrost meat last minute

Available choices:
(A). Place meat in a plastic bag, then put it on top of an upside-down aluminum pot. Fill another pot with room-temperature water, and set it on the meat;
(B). Place meat in a small bucket, then put it on top of an upside-down aluminum cocktail shaker. Fill another pot with room-temperature water, and set it on the meat;
(A).