Write the First Five Terms of the Sequence

Write the first five terms of the sequence.Determine whether the sequence is arithmetic.If so, find the common difference.(Assume that n begins with 1.) ​
A_n = (-2) n
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A) ​-2, 4, -8, 16, -32Not an Arithmetic sequence
B) -32, -16, -8, -4, -2Arithmetic sequenced = 2
C) -2, 4, -8, 16, -32Arithmetic sequenced = -2
D) -2, 4, -8, -16, -32Arithmetic sequenced = 2
E) -32, -16, -8, 4, -2Not an Arithmetic sequence