Find $a _ { n } \text { and } a _ { 6 }$

Multiple Choice

Find $a _ { n } \text { and } a _ { 6 }$ for the following arithmetic sequence.
- $$a _ { 1 } = 42 , d = - 8$$

A) $a _ { n } = 42 + 8 n , a _ { 6 } = 90$
B) $a _ { n } = 42 + 8 ( n - 1 ) , a _ { 6 } = 82$
C) $a _ { n } = 42 - 8 n , a _ { 6 } = - 6$
D) $a _ { n } = 42 - 8 ( n - 1 ) , a _ { 6 } = 2$