I had to walk home yesterday:I had no money for my fare.Yo

I had to walk home yesterday:I had no money for my fare.You me l I could have lent you the money!
A.ought to tell
B.must have told
C.must tell
D.should have told

这是一句对话.
我昨天只能走路回家,因为我没车费.
你当时应该告诉我,我就可以借钱给你了.
答案选D