The picnic was cancelled. Peter has just had a traffic...

Câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
The picnic was cancelled. Peter has just had a traffic accident.
A. Peter cancelled the picnic.
B. The traffic accident stopped our picnic.
C. The picnic was cancelled since Peter has just had a traffic accident.
D. The picnic was cancelled because Peter has just had a traffic accident.