Detailed Instructions: 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.
Q: You can whistle to salute a person formally
(A) The act of whistling is only used in informal cases
(B)Whistling and waving can be used to salute a person
(C)Whistling and waving requires your hand
A:
A