[photochemsyn]

Pretty much any four-year college degree that could have a BS attached to it could equally well have a BA attached to it, depending on the course work required. Mathematics with a focus on the history of mathematics and the social / cultural aspects of mathematics, educational in mathematics, etc. would maybe be a BA. Generally, the difference will be something like BS degree students take twice as many calculus and differential equations courses as BA students do.

As to whether one feels better about having a BA vs a BS, in reality most people don't care too much about things like that. A BA may leave more room for classes in other subjects, which can be beneficial. A BS might be better preparation for a grad program in that subject, otherwise your grad program might require a year of in-subject coursework.