Dennis cooks dishes in three colors - red, white and...

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Dennis cooks dishes in three colors - red, white and yellow. If Norman, the renowned restaurant critic, selects one dish randomly, what is the probability that the selected dish will be either white or yellow?

(1) The probability that the dish will be yellow is 1/5

(2) The probability that the dish will be red is 1/3

The OA is B.

Can any expert help me with this DS question please? I don't have it clear. Thanks.
Source: — Data Sufficiency |