You will be given a definition of a task first, then some input of the task.
In this task, you are given an impractical statement. You are also given three reasons (associated with "A", "B", "C") explaining why this statement doesn't make sense. You must choose the most corresponding reason explaining why this statement doesn't make sense.

My keys are made of ice
(A) keys are solid and ice are water
(B)i can make ice in any shape with a key
(C)ice would melt and it is no more a key
Output:
C