What Is $2 c ^ { 3 } \left( 4 c ^ { 2 } \right) 5 c ^ { 2 }$

Multiple Choice

What is $2 c ^ { 3 } \left( 4 c ^ { 2 } \right) 5 c ^ { 2 }$  rewritten using only one exponent?

A) $8 c ^ { 7 }$
B) $40 c$
C) $40 c ^ { 6 }$
D) $40 c ^ { 7 }$
E) $9 c ^ { 7 }$