Xerox Black

when someone says something is what is meant Xerox color or black and white?

I know I'm stupid, but confused the sound. for my summer job of my teacher Xerox told me some photos. Do you think it means black and white or color? thanks. I know it doesn't really matter but I want to follow your exact instructions.

Xerox brand name for a copy machine. If it's for a mission, not color if possible. There will be a huge price difference for a few photos. If out of 500 copies, I ask

Xerox Black

Xerox Black