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
​

A) ​-2,4,-8,16,-32 Not an Arithmetic sequence
B) -32,-16,-8,-4,-2 Arithmetic sequence
D = 2
C) -2,4,-8,16,-32 Arithmetic sequence
D = -2
D) -2,4,-8,-16,-32 Arithmetic sequence
D = 2
E) -32,-16,-8,4,-2 Not an Arithmetic sequence

Correct Answer:

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