The facts that support the trichromatic theory of color vision is We can create yellow light by combining red light and green light in equal amounts.
Trichromatic theory can be described as the thoery that help to indicates that we can receive 3 types of colors (red, green, and blue) and that the cones vary the ratio of neural activity.
It should be noted that this an be seen as the ratio of each color to the other then determines the exact color that we see.
Therefore option A is correct.
Learn more about color at:
https://brainly.com/question/911645
#SPJ1