Solve the Equation $z = \frac { 5 z } { 7 } - 7$

Multiple Choice

Solve the equation. $z = \frac { 5 z } { 7 } - 7$

A) $z = 23$
B) $z = \frac { 47 } { 2 }$
C) $z = - \frac { 49 } { 2 }$
D) $z = - \frac { 70 } { 3 }$
E) $z = - \frac { 47 } { 2 }$