After interchanging $$\div$$ and +, 12 and 18, which one of the following equations becomes correct?

A

(90 x 18) + 18 = 60

B

(18 +6) $$\div$$ 12 = 20

C

(72 =18) x 18 = 72

D

(12 + 6) x 18 = 36