Find the Partial Sum of the Geometric Sequence with the Given

Multiple Choice

Find the partial sum of the geometric sequence with the given first term and common ratio.
- $\mathrm { s } 5 , \mathrm { a } 1 = 1 , \mathrm { r } = \frac { 1 } { 2 }$

A) $- \frac { 1 } { 48 }$
B) $\frac { 1 } { 12 }$
C) 93
D) $\frac { 31 } { 16 }$