Use the Process of Factoring by Grouping to Factor the Polynomial

Multiple Choice

Use the process of factoring by grouping to factor the polynomial. $4 z ^ { 2 } + z - 28 z - 7$

A) $( 4 z - 1 ) ( z + 7 )$
B) $( 4 z + 28 ) ( z - 7 )$
C) $( 4 z - 28 ) ( z - 1 )$
D) $( 4 z + 1 ) ( z - 7 )$