Which of these correctly describes the expression ?

A.
The expression is equal to the product of –4, x, and

.

B.
The expression is equal to the product of –4 and a factor not depending on –4.

C.
The expression is equal to the product of –4x and a factor not depending on –4x.

D.
The expression is equal to the product of –4 and a factor depending on –4.