Find the 10th Term in the Binomial Expansion $$\left( \frac { x } { 2 } - \frac { d } { 2 } \right) ^ { 11 }$$

Multiple Choice

Find the 10th term in the binomial expansion. $$\left( \frac { x } { 2 } - \frac { d } { 2 } \right) ^ { 11 }$$

A) $\quad - \frac { 1 } { 24 } x d ^ { 10 }$
B) $\quad - \frac { 55 } { 2,048 } x ^ { 2 } d ^ { 9 }$
C) $\quad \frac { 55 } { 128 } x ^ { 2 } d ^ { 9 }$
D) $\quad - \frac { 11 } { 2,048 } x ^ { 2 } d ^ { 9 }$
E) none of the above