SAT: Using mechanical pencil

Can I use mechanical pencil to circle, underline, and show work, but use #2 pencil to bubble in? I mean that’s not defying the rules, right?

Yes, however the proctor may ask you not to do so, so plan on having a few #2 pencils.

Nope if you’re in Asia. They don’t even let us bring the mechanical pencil into the testing room.

I’m from the U.S.