Which equation is best illustrated by the picture?

A) 3(10 + 2) = 10(2) + 3(2)

B) 3(10 + 2) = 3(10) + 3(2)

C) 3(10 + 2) = 3(10) + 2

D) 3(10 + 2) = 3(2) + 10