As Shown in the Figure,a C-Shaped Conductor Is in a Uniform

Multiple Choice

As shown in the figure,a C-shaped conductor is in a uniform magnetic field B out of the page,and this field is increasing.What is the polarity of the induced emf in terminals X and Y?

A) X and Y are at the same potential.
B) X is positive and Y is negative.
C) Y is positive and X is negative.