You've a quantity. It is called 'x'.
"Twice x" is 2x
"Three less than twice x" is 2x-3
"The quantity three times x" is 3x
"Two more than the quantity three times x" is 3x+2
(2x-3)(3x+2) = ???
RIGHT AWAY, notice that this leads to +6x^2. Discard Choice A.
Next, the constant term must be -6. Discard Choices B & C.
You tell me how to decide between D and E.