Find the Nth Term of the Geometric Sequence $$a _ { 1 } = 1792 , r = \frac { 1 } { 4 } , n = 4$$

Multiple Choice

Find the nth term of the geometric sequence.
- $$a _ { 1 } = 1792 , r = \frac { 1 } { 4 } , n = 4$$

A) $a _ { 4 } = - 28$
B) $a _ { 4 } = - \frac { 1 } { 28 }$
C) $\mathrm { a } _ { 4 } = \frac { 1 } { 28 }$
D) $\mathrm { a } _ { 4 } = 28$