Erasable pens for essay questions?

Anyone know if erasable blue or black pens are permitted for the essay questions? I’ve been doing practice tests with them and wonder if I need to switch to the regular kind.

Pretty sure they’re allowed.

As are pencils.

Pens and pencils are both allowed but pens are encouraged by CFAI. I heard erasers also erase writing on the other side of the page with erasable pens so watch out.