Find a General Term $a_{n}$ , for the Given Terms of the Sequence

Multiple Choice

Find a general term, $a_{n}$ , for the given terms of the sequence.
- $1, \frac{1}{4}, \frac{1}{9}, \frac{1}{16}, \frac{1}{25}, \ldots$

A) $a_{n}=(2) ^{1-n}$
B) $a_{n}=\frac{1}{n^{2}}$
C) $a_{n}=\frac{1}{n^{n-1}}$
D) $a_{n}=\frac{1}{3 n-2}$