Use Properties of Real Numbers to Write $12 ( z / 4 )$

Multiple Choice

Use properties of real numbers to write $12 ( z / 4 )$ without parentheses.

A) $\frac { 1 } { 4 } Z$
B) $\frac { 1 } { 12 } z$
C) $48 z$
D) $12 z$
E) $3 z$