The Probability That a Couple Will Have N Baby Boys $\left( \frac { 1 } { 2 } \right) ^ { n }$

Multiple Choice

The probability that a couple will have n baby boys in a row is given by the formula $\left( \frac { 1 } { 2 } \right) ^ { n }$ .  Find the probability that a couple will have 5 baby boys in a row.

A) $\frac { 1 } { 20 }$
B) $\frac { 1 } { 10 }$
C) $\frac { 1 } { 32 }$
D) $\frac { 1 } { 25 }$
E) 32