The Medical Center in Houston, Texas, is bound by US-59 to the north, l-610 to the west (west loop), 1-610 to the south (south loop), and Hwy 288 to the east. The highways create a region that is roughly a three-mile by four-mile rectangle.

(a) What are the correct units for the area of the region?

There may be more than one correct answer.

A. Miles
B. Square miles
C. mi^2
D. mi^3

(b) What is the area of the Medical Center?