The sequence $\left\{a_{n}!\right.$ has the general term formula $a_{n}=n^{4}-20 n^{2}-10 n+1(n=1,2, \cdots)$, from which term does the sequence $\left\{a_{n}\right.$ start to be strictly increasing?
(A) The 10th term
(B) The 13th term
(C) The 14th term
(D) The 22nd term