The First Several Terms of a Sequence Are Given $$- \frac { 1 } { 2 } , \frac { 1 } { 4 } , - \frac { 1 } { 8 } , \frac { 1 } { 16 } , \ldots ; S _ { 5 }$$

Multiple Choice

The first several terms of a sequence are given. Find the indicated partial sum.
- $$- \frac { 1 } { 2 } , \frac { 1 } { 4 } , - \frac { 1 } { 8 } , \frac { 1 } { 16 } , \ldots ; S _ { 5 }$$

A) $- \frac { 15 } { 64 }$
B) $- \frac { 21 } { 64 }$
C) $- \frac { 11 } { 32 }$
D) $- \frac { 1 } { 32 }$