Another word problem that's stumping me

This is yet another example of a problem on the sample NC EOG test (7th grade).

A rectangular piece of land will be divided diagonally into two congruent triangular sections. One section will be covered with grass, and the other section will be paved. The blueprint measurements for the piece of land are 5 inches wide by 12 inches long. The blueprint scale is 1/4 inch = 10 feet. how much area will be paved.

A) 2,400 square feet

B) 9,600 square feet

C) 48,000 square feet

D) 96,000 square feet

What steps do I take to find the answer to this?