Indirect Proof help! WILL MEDAL

Given: Rectangle JKLM has an area of 36 square centimeters. Side is at least 4 centimeters long.
Prove: KL ≤9 centimeter

"Assume that a. ____. Then the area of rectangle JKLM is greater than b. _____ , which contradicts the given information that c. _____. So the assumption must be false. Therefore, d. _____."