Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
You’d better take the keys. It’s possible I’ll come home late.
A. If I come home late, you’d better take the keys
B. You’d better take the keys in case I come home late
C. You'd better take the keys as I possibly come home late
D. I'll probably come home late so that you’d better take the keys