1. Set $A=\{2,0,1,3\}$, Set $B=\left\{x \mid-x \in A, 2-x^{2} \notin A\right\}$, then the sum of all elements in set $B$ is
A. -4
B. -5
C. -6
D. -7
Check the elements in $B$: $x=-2,0,-1,-3 ; 2-x^{2}=-2,2,1,-7$, then $B=\{-2,-3\}$, so the answer is $B$.