According to the text, what is the effect of reversing the poles in the power supply on the motor's rotation direction?

Reversing the poles in the power supply contributes to changing the motor's rotation direction.
Reversing the poles in the power supply does not generate any change in the motor's rotation direction.
a) Only the first statement is correct.
b) Only the second statement is correct.
c) Both statements are correct.
d) Both statements are incorrect.