Find a Formula For $a _ { n }$ For the Arithmetic Sequence Below

Multiple Choice

Find a formula for $a _ { n }$ for the arithmetic sequence below. $- 2 , - 1,0,1,2 , \mathbf { K }$

A) $a _ { n } = 3 n + 1$
B) $a _ { n } = - 3 n - 1$
C) $a _ { n } = - n - 3$
D) $a _ { n } = n - 3$
E) $a _ { n } = n + 3$