A:2.0×10﹣5T,与水平方向成53°角向下
B:2.0×10﹣5T,与水平方向成53°角向上
C:5.0×10﹣5T,与水平方向成53°角向下
D:5.0×10﹣5T,与水平方向成53°角向上
The naughty boy is always in his room.His mother is very angry.