According to the Trichromatic (Young-Helmholtz)theory,when Do We Perceive White?​

Multiple Choice

According to the trichromatic (Young-Helmholtz) theory,when do we perceive white?​

A) We see white when the red-green and yellow-blue systems are at their neutral point.
B) ​We see white when the velocity of action potentials approximates the normal distribution.
C) ​We see white when the cones are twice as active as the rods.
D) ​We see white when all types of cones are equally active.