THe B stands for Bachelor. A stands for arts. Sc stands for science. Most, if not all, undergraduate degrees are given one or other label. Every kind of physical or chemical science, plus maths and some kinds of social sciences lead to the award of BSc. Languages, history, geography and politics are classed as 'arts degrees,' and so lead to the award of a BA.,

BA - bachelor of arts BSc - bachelor of science A bachelor is an unmarried man, so these terms are anachronistic now. PhD - Philosophiae Doctor (which is in the Latin language)

e.g. is an abbreviation of the Latin words: exempli gratia ;)

Note that you need to get the capitalisation correct - as per the answers, not how you wrote them.