Although Ladd-Franklin Completed All of the Requirements for Her Ph

Although Ladd-Franklin completed all of the requirements for her Ph.D.in 1882,she was not granted the degree until 1926.The delay was because:

A) Johns Hopkins did not have a Ph.D.program until 1926
B) she was a woman
C) of her dissertation topic
D) the quality of her research was considered inferior to that of other Ph.D.candidates and required additional work.