A rectangular parking space is marked out by painting three of its sides. If the length of the unpainted side is 9 feet, and the sum of the lengths of the painted sides is 37 feet, find out the area of the parking space in square feet?

• A. 126 sq. ft.
• B. 64 sq. ft.
• C. 100 sq. ft.
• D. 102 sq. ft.