Which one of the following implications is false?

A

if 3 + 2 = 5 then 1 $$\times$$ 0 = 0

B

if 3 $$\times$$ 6 = 20 then 2 $$\div$$ 7 = 9

C

if 5 $$\times$$ 7 = 30 then 2 $$\div$$ 1 = 2

D

if 6 $$\times$$ 7 = 42 then 6 $$\div$$ 2 = 4