Can i delete a players game on Super mario bros. 3 on game boy advance SP and how ?

I just got a used super mario bros. 3 game from game stop and all the player sides are used and i want to start a new side?

Can i delete a players game on Super mario bros. 3 on game boy advance SP and how ?
somewhere down at the bottom of the screen erase


then u should see a bomb next to a file pick one of them and press "A"
Reply:Somewhere in the title screen it says "Erase all". Y´know, down the player games.