Find the Indicated Sum or Difference $$\left( 7 b ^ { 2 } + 9 b \right) + \left( 9 b ^ { 2 } - 7 b + 8 \right)$$

Multiple Choice

Find the indicated sum or difference. $$\left( 7 b ^ { 2 } + 9 b \right) + \left( 9 b ^ { 2 } - 7 b + 8 \right)$$

A) $16 b ^ { 2 } + 2 b - 8$
B) $17 b ^ { 2 } + 2 b + 8$
C) $16 b ^ { 2 } + 2 b + 8$
D) $16 b ^ { 2 } + 2 b$
E) $16 b ^ { 2 } + 16 b + 8$