Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct. 45 * 24 * 72 * 20 * 12 * 7

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

×,  ÷,  =,  –,  +

From the option (1) 45 × 24 ÷ 72 = 20 – 12 + 7               ⇒ 45 × \(\frac{24}{72}\)   =  8 + 7 ⇒ 15 = 15