A and B are two typists. One afternoon, they were each given 80 pages for typing.
They divided the work equally, but B finished 40 minutes before A, who took 4 hours for the same. The next afternoon, they were again given 121 pages to type. However, this time they decided to divide the work such that they finished typing simultaneously. How many pages did A have to type?

A

50 pages

B

77 pages

C

60 pages

D

55 pages