Which of the following models can be used to find the product of (2x + 1)(x + 6)?

A
2x(x + 6) – 6(x + 1)

B
2x(x – 6) + 1(x – 6)

C
x(x – 6) + 2x(x – 6)

D
x(2x + 1) + 6(2x + 1)