Write a Formula for the General Term (The Nth Term)of $r a _ { n }$

Multiple Choice

Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for $r a _ { n }$ to find $a _ { 20 }$ , the 20th term of the sequence.
- $14,8,2 , - 4 , \ldots$

A) $a _ { n } = - 6 n + 20 ; a _ { 20 } = - 100$
B) $a _ { n } = - 6 n + 14 ; a _ { 20 } = - 106$
C) $a _ { n } = 6 n - 20 ; a _ { 20 } = 100$
D) $a _ { n } = 6 n - 14 ; a _ { 20 } = 106$