Write the first five terms of the following sequence and obtain the corresponding series:
$a_{1} = a_{2} = 2, a_{n} = a_{n-1} - 1, n > 2$
$a_{1} = a_{2} = 2, a_{n} = a_{n-1} - 1, n > 2$
- A$2 + 2 + 1 + 0 - 1$
- B$2 + 2 + 1 + 0 + 1$
- C$2 + 2 + 1 + 0 + (-1)$
- D$2 + 2 + 1 + 0 + 2$
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