2. The inequality about $x$ $\left\{\begin{array}{l}x-1>0, \\ x^{3}-x^{2}+x \leqslant k\end{array}\right.$ has only the positive integer solutions 2 and 3. Then the value of $| k-21|+| k-52 \mid+$ 1975 is ( ).
(A) 2004
(B) 2005
(C) 2006
(D) 2007