11. The solution set of the equation $x^{2}|x|+|x|^{2}-x^{2}-|x|=0$ in the complex number set corresponds to a figure in the complex plane which is ( ).
A. Several points and a line
B. Unit circle and a line
C. Several lines
D. Origin and unit circle
11. The original equation can be transformed into $\left(x^{2}+|x|\right)(|x|-1)=0$, from which we can conclude that D is correct.