How do I make an Adobe Acrobat [.PDF] file black & white for printing?

I go to ';Print'; and it doesn't give me the option to change a color .pdf into a grayscale or black %26amp; white. Please help me, I'm low on color ink and I have to get this assignment done by this afternoon!How do I make an Adobe Acrobat [.PDF] file black %26amp; white for printing?
You don't need to convert the PDF file to black %26amp; white, all you have to is print it as: black or as grayscale.



It's in the printing option. When the Print option dialog box appear, just select ';Properties'; and the option is in there.

Select either black but normally on printer is ';Grayscale Printing';.