A 20-Cm Length of Wire Is Held Along an East-West $\mu$

A 20-cm length of wire is held along an east-west direction and moved horizontally to the north with a speed of 3.0 m/s in a region where the magnetic field of the Earth is 60 $\mu$ T directed 30 $\degree$ below the horizontal.What is the magnitude of the potential difference between the ends of the wire?

A) 36 $\mu$ V
B) 18 $\mu$ V
C) 31 $\mu$ V
D) 24 $\mu$ V
E) 21 $\mu$ V