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

Multiple Choice

Find $a _ { n } \text { and } a _ { 6 }$ for the following arithmetic sequence.
-2, 6, 10, 14, 18, . . .

A) $a _ { n } = 2 n - 4 ; a _ { 6 } = 8$
B) $a _ { n } = 4 n - 2 ; a _ { 6 } = 22$
C) $a _ { n } = n + 4 ; a _ { 6 } = 10$
D) $a _ { n } = 2 ( 4 ) ^ { n - 1 } ; a _ { 6 } = 32,768$