OPT: a). Red, Green b). Green, Yellow c). Red, Brown d). Brown, Yellow
Given those answer options, answer the question: Read the following article and answer the question. Article: People who cannot tell all colors apart are said to be color-blind. Most color-blind people can see yellows and blues, but confuse reds with green. It is very rare for a person to be blind to all colors, but they may see everything in shades of black, white and gray. It is interesting to point out that many color-blind people don't even realize that they are color-blind, they don't know that the colors they are seeing and naming are not the actual colors that people with normal vision can see. This can be dangerous when a color-blind person confuses the red and green of a traffic light. Color blindness is thought to be inherited and although doctors have tested color blindness, there is no cure to treatment for it. Question: There are four cards here, and each has two colors. Which card's colors do you think a color-blind person can tell correctly? Answer:
A:
d).