What is the domain of the rational function f of x is equal to the quantity x squared plus x minus 6 end quantity over the quantity x cubed minus 3 times x squared minus 16 times x plus 48 end quantity question mark {x | x -4, -2, 3, 4} {x | x -4, 3, 4} {x | x -4, 4} {x | x -2, 3}