Jenna constructs the model to represent 3x2 11x - 4. what factors does jenna need to model for the sides?

The choices are the below that can be elsewhere:

(3x + 1) and (x - 4)

(3x - 1) and (x + 4)

(3x - 2) and (x + 2)

(3x + 2) and (x - 2)

I assume that the correct equation is 3x2 + 11x - 4. The answer is (3x - 1) and (x + 4).