If f of x is equal to 4 minus x squared and g of x is equal to 6 x , which expression is equivalent to open paren g minus f close paren of 3 ?
A
6 times 3 minus 4 plus 3 squaredB
6 times 3 minus 4 minus 3 squaredC
6 minus 3 minus open paren 4 plus 3 close paren squaredD
6 minus 3 minus open paren 4 minus 3 squared close paren