'+' stands for division, '÷' stands for multiplication, 'x' stands for subtraction and '-' stands for addition. Which one of the following equations is correct?
(A) 18 ÷ 6 - 7 + 5 x 2 = 20
(B) 18 + 6 ÷ 7 x 5 - 2 = 18
(C) 18 x 6 + 7 ÷ 5 - 2 = 16
(D) 18 ÷ 6 x 7 + 5 - 2 = 22