Perform the Indicated Operation $\left( 4 c ^ { 4 } d - 7 c d + 8 c \right) + \left( 3 c d - 8 c ^ { 4 } d - 7 c \right)$

Multiple Choice

Perform the indicated operation: $\left( 4 c ^ { 4 } d - 7 c d + 8 c \right) + \left( 3 c d - 8 c ^ { 4 } d - 7 c \right)$

A) $4 c ^ { 4 } d + 4 c d - c$
B) $7 c ^ { 4 } d - c d + c$
C) $- 4 c ^ { 8 } d ^ { 2 } - 4 c ^ { 2 } d ^ { 2 } + c ^ { 2 }$
D) $- 4 c ^ { 4 } d - 4 c d + c$