—I think we should take action to protect the endangered animals.
— .
A:So I do
B:Me neither
C:Me too
D:So I am
一块直角三角板ABC按如图放置,顶点A的坐标为(0,1),直角顶点C的坐标为(﹣3,0),∠B=30°,则点B的坐标为____ .