Can someone check my answer please?
A conference room is in the shape of a rectangle. Its floor has a length of (x − 4) meters and a width of (3x − 1) meters. The expression below represents the area of the floor of the room in square meters:

(x − 4)(3x − 1)

Which of the following simplified expressions represents the area of the floor of the conference room in square meters?
:Answers:
A) x^2-13x+4
B) 3x^2-14+4
C) 3x^2-11x+4
D) x^2-12x+4
I think it's A

Question

Can someone check my answer please? 
A conference room is in the shape of a rectangle. Its floor has a length of (x − 4) meters and a width of (3x − 1) meters. The expression below represents the area of the floor of the room in square meters:

(x − 4)(3x − 1)

Which of the following simplified expressions represents the area of the floor of the conference room in square meters?
 :Answers: 
A) x^2-13x+4
B) 3x^2-14+4
C) 3x^2-11x+4
D) x^2-12x+4
 I think it's A

anonymous · Answer

I also have another question that I need someone to explain please.