Find the 3rd Term in the Binomial Expansion $$\left( z + \frac { b } { 2 } \right) ^ { 8 }$$

Multiple Choice

Find the 3rd term in the binomial expansion. $$\left( z + \frac { b } { 2 } \right) ^ { 8 }$$

A) $\quad 28 z ^ { 6 } b ^ { 2 }$
B) $\quad z ^ { 6 } b ^ { 2 }$
C) $\quad 4 z ^ { 6 } b ^ { 2 }$
D) $\quad 7 z ^ { 2 } b ^ { 6 }$
E) $\quad 7 z ^ { 6 } b ^ { 2 }$