I found an old article from 2003 discussing the reasoning behind Duke abbreviating Bachelor of Arts degrees as “A.B.” rather than BA: https://library.duke.edu/rubenstein/uarchives/history/articles/commencement-traditions
However, recent articles are conflicting. A page from the Nicholas School of the Environment still differentiates between “AB and BS degrees” but a Trinity CAS page lists “BA” and “BS” as the possible degrees.
It may appear to be a trivial inquiry, but nevertheless, I am curious. Could any recent Duke graduates help me out here? Thanks!