Find the Indicated Term of the Binomial Expansion $\left( 2 r + s ^ { 2 } \right) ^ { 10 }$

Multiple Choice

Find the indicated term of the binomial expansion.
- $\left( 2 r + s ^ { 2 } \right) ^ { 10 }$ ; eighth term

A) $180 r ^ { 2 } s ^ { 16 }$
B) $90 r ^ { 2 } s ^ { 8 }$
C) $960 r ^ { 3 } s ^ { 14 }$
D) $240 r ^ { 3 } s ^ { 7 }$