P can complete five-eighths of a work in 15 days and Q can complete three-fourths of the same work in 30 days. They worked together for 8 days and then P left. How muchtime will Q working alone, take to complete the remaining work?

A

15 days 16 hours

B

18 days 16 hours

C

20 days 4 hours

D

15 days 8 hours