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.
She tested positive for Covid-19. She isolated herself to protect other people in her community.
A. Had she tested positive for Covid-19, she would have isolated herself to protect other people in her community,
B. Not only did she test positive for Covid-19 but she also isolated herself to protect other people in her community.
C. Only when had she tested positive for Covid-19, she isolated herself to protect other people in her community.
D. No sooner had she tested positive for Covid-19 than she isolated herself to protect other people in her community.