Solve the Problem. Round as Appropriate

Multiple Choice

Solve the problem. Round as appropriate.
-The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 2.25 lb when the masses are 4 ft apart, what is the attraction when the masses are 6 ft
Apart?

A) 1 lb
B) 4 lb
C) 2 lb
D) 3 lb