Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct. 68 * 138 * 23 * 54 * 20

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

+,  ÷,  –,  =

From the option (3) 68 + 138 ÷ 23 – 54 = 20 68 + 6 – 54 = 20 20 = 20