Given Are Two Similar Triangles Shown in the Figure $a ^ { \prime } = 7$

Multiple Choice

Given are two similar triangles shown in the figure. If $a ^ { \prime } = 7$ $c ^ { \prime } = 8$ $a = 5$ find $C$

A) $\frac { 7 } { 40 }$
B) $\frac { 56 } { 5 }$
C) $\frac { 3 } { 4 }$
D) $\frac { 5 } { 56 }$
E) $\frac { 40 } { 7 }$