!.On "B" you will have higher taxes and have to pay all your soc sec/medicare yourself(on a job empl pays 50%)
2>You will pay estimated taxes quarterly in advance to uncle sam. You dont get to wait till end and holds it all(penalties!)
3.You are not being guaranteed hours and your paycheck will be erratic.
My advice to you is take "A" and learn some things.

Better yet, learn a TRADE like your uncle Pat said. Start at the bottom as a plumber/electrician etc,not at a shampoo manufacturer. You will always find work wherever you my roam.