Hey, I got a degree in Economics, flew in jets in Navy, imported tech goods, did special effects for theme parks, worked developing shows in planetariums, did tech repairs there, designed presentation theater for world's biggest corporation, designed laser optics, manufacturing engineer for precision lab light meters, and taught CADD in college night classes to engineers, architects, interior designers, construction estimators. So what do I know?
Basically, do what you enjoy doing. The fields you mentioned are so broad and with so much overlap, does not matter much. And those fields' tech change so fast, hard to predict what even just 5 years coming.
My friend got PhD in computer science from Cal Berkley 50 years ago, worked for IBM inventing 3D viewing and color in displays. He finished designing the software for a DVD and CD mastering disk manufacturer. He did not have any idea in 1965 where he would be working, but he enjoyed it.