Let f(x)=-6x+3 And g(x)=5x+4 Find F×G and state it's domain

A) -18x^2-39x+20; all real numbers except x=1

B) -30x^2-9x+12; all real numbers except x=4

C) -30x^2-9x+12; all real numbers

D) -18x^2-39x+20; all real numbers ​