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.

the airline had been screening pets on X-ray machines
(A) pets are checked by human not X-ray machines in airport
(B)there are X-ray machines in hospitals
(C)some people bring their pets to the airport
Output:
A