PLEASE I NEED HELP!!! the length of the living room is 12 feet and its width is 10 and 1/2 feet . The length of the room is being expended by X feet choose an expression to represent the new area of the living room in square feet and the expanded form of the expression select all that apply
A 10.5(12x) square feet
B (10.5+12+×) square feet
C 10.5(12+x) square feet
D 126x square feet
E (126+10.5x) square feet
F (22.5 + x) square feet