The Young-Helmholtz Trichromatic Theory States That We Can See Colour

The Young-Helmholtz trichromatic theory states that we can see colour because the human eye has ________ different types of light detecting cells that _.

A) 4; are tuned to red, yellow, blue, and white light
B) 3; are tuned to blue/yellow, red/green, and black white light
C) 3; are tuned to red, yellow, and blue light
D) 3; are tuned to red, green, and blue light
E) none of these answers explain the Young-Helmholtz trichromatic theory