Choose one sentence that has the same meaning as the root one:
He got a flat tire so he didn't attend the meeting.
A. if he didn’t get a flat tyre, he would have attended tne meeting
B. if the flat tyre hadn’t happened, he would have attended the meeting.
C. had he not had a flat tyre, he would have attended the meeting
D. had the tyre not flattened itself, he would have attended the meeting.