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.
Laura practised playing the instrument a lot. She could hardly improve her performance.
A. However much Laura practised playing the instrument, she could hardly perform any better.
B. As soon as Laura practised playing the instrument a lot, she could perform much better.
C. Had Laura practised playing the instrument a lot, she could have performed much better.
D. Hardly had Laura practised playing the instrument a lot when she could improve her performance.