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 from 22 to 23.
Mary doesn’t come to class today. She contracts a serious illness.
A. In case Mary didn’t contract a serious illness, she wouldn’t come to class today.
B. If Mary didn’t contract a serious illness, she would come to class today.
C. Unless Mary had contracted a serious illness, she wouldn’t come to class today.
D. Provided that Mary contracts a serious illness, she will come to class today.