Which sentence contains a correctly punctuated parenthetical phrase?

At any rate I'm just dissatisfied with the whole situation.

The best way to make French toast, by the way, is to soak the bread in the egg mixture for at least an hour.

The closest store to our house, on the other hand is Ken's Five-and-Dime.

Erin's least favorite class, I might as well tell you is Daily Life Skills.