![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
No one knows what set Weise off that day. What does this sentence mean?
A.
No ones knows when Weise left that day.
B.
No one knows what stimulated Weise and caused his crazy behavior that day.
C.
No one knows what caused Weise to leave them that day.
D.
No one knows the reason why Weise went somewhere else that day.