A Simple Generator Consists of a Single Rectangular Loop of Wire

Multiple Choice

A simple generator consists of a single rectangular loop of wire rotating between two magnetic pole fACes as shown. Which curve in the graph correctly represents the EMF $\epsilon$ as a function of the angle between the normal to the plane of the coil and the direction of the magnetic field?

A) 1
B) 2
C) 3
D) 4
E) None of these is correct.