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: He waved hands at his bike
(A) Bike is not a human and no one waves at bike
(B)Bike is not turned on
(C)Bike did not have fuel

A: A
****
Q: Cows can fly in the sky
(A) Cows are scared of the sky
(B)Cows do not have wings
(C)Cows eat green grass and sky is blue

A: B
****
Q: Prague is an old city, it has been existed in Europe for more than a trillion years
(A) Prague is a city in Europe
(B)Europe has been existed for more than a thousand years ago
(C)There is no human race a trillion years ago

A:
C
****