A Square Coil of Wire with 15 Turns and an Area

A square coil of wire with 15 turns and an area of 0.40 m² is placed parallel to a magnetic field of 0.75 T. The coil is flipped so its plane is perpendicular to the magnetic field in 0.050 s. What is the magnitude of the average induced emf?

A) 6.0 V
B) 12 V
C) 36 V
D) 45 V
E) 90 V