The City of Los Angeles Is Now Approximately 2400 Miles

The city of Los Angeles is now approximately 2400 miles south of Anchorage, Alaska. It is moving slowly northward as the San Andreas fault slides along. If Los Angeles is to arrive near Anchorage in 76 million years, at what average rate will it have to move in mm per month? (1 mi = 1609 m)

A) 2.0 × 10^-10 mm/mo.
B) 6.6 × 10^-6 mm/mo.
C) 4.2 mm/mo.
D) 9.5 mm/mo.
E) 51 mm/mo.