A square kitchen has x feet on each side. The counters cover the length of the kitchen on two sides to a depth of 3 feet. There is also a table that measures 3 feet by 4 feet.

Which expression represents the area, in square feet, of the floor space that is not covered by tables and counters?

A) x^2-6x-21
B) x^2+6x-3
C)x^2-6x-12
D)x^2-6x-3


please help I suck at Algebra!! answer will get branliest!!