What is true of color blindness?

A) Color blindness affects one of about every million people.
B) Individuals who suffer from the most common type of color blindness are most likely to see everything as different shades of yellow.
C) Individuals who suffer from the most common type of color blindness are unable to distinguish blue from red.
D) Individuals who suffer from color blindness are more likely to be male than female.

Color blindness is more common in males than in females, with estimates suggesting that approximately 8% of males and 0.5% of females suffer from some form of color blindness. Option A is incorrect because color blindness is much more prevalent than that, with millions of people worldwide affected by it. Option B is incorrect because individuals with the most common type of color blindness, protanopia, see everything as different shades of green rather than yellow. Option C is incorrect because individuals with protanopia are unable to distinguish between red and green rather than blue and red.