What color does a green cloth appear in yellow light

[jsmith613]

Homework Statement

what color does a green cloth appear in yellow light

Homework Equations

The Attempt at a Solution

i know its either green or black but i don't know which.
Yellow light is either a wavelength of its own or a mixture of green and red, that's where my problem is. I am not sure

 

[Volcano]

Think this: What does green cloth appear with green? and what does it appear in red? Since yellow light is green+red...