When they work alone, \(B\) needs \(25\%\) more time to finish a job than \(A\) does. The two finish the job in \(13\) days in the following manner: \(A\) works alone till half the job is done, then \(A\) and \(B\) work together for four days, and finally \(B\) works alone to complete the remaining \(5\%\) of the job. In how many days can \(B\) alone finish the entire job?

A. \(22\)
B. \(20\)
C. \(18\)
D. \(16\)
E. \(14\)

The OA is B