下列物质中，顺磁性物质是
   (A) (B) (C) (D) C₂

A.174.24.96:6088/Latex/latex.action?latex=T197Mn1eezItfQ%3D%3D'
B.174.24.96:6088/Latex/latex.action?latex=Tl97Mn1eezItfQ%3D%3D'
C.174.24.96:6088/Latex/latex.action?latex=QmVfezJ9XnsyK30%3D'