Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.  45 * 24 * 72 * 20 * 14 * 9

=,  ×,  +,  ÷,  –   ÷,  ×,  +,  –,  = +,  ÷,  –,  =,  ×   ×,  ÷,  =,  –,  +

×,  ÷,  =,  –,  +

45 × 24 ÷ 72  =  20 – 14 + 9 45 × 1÷3  =  6 + 9  =  15 = 15 So, correct answer is option (D).