Which trinomial is the product of the expression below ?
(x+3)(x+4)
Ax²+7
Bx²+7x+12
Cx²+12x+7
Dx²+12x+12
(x+3)(x+4)
Ax²+7
Bx²+7x+12
Cx²+12x+7
Dx²+12x+12