He told me it was the reason _______ he explained just now _______ made him come late yesterday.

A. which; which   B. which; that   C. why; that   D. why; which

He told me it was the reason ________ he explained just now ________ made him come late yesterday．

1. A.
   which; which
2. B.
   which; that
3. C.
   why; that
4. D.
   why; which