Out of 60 students surveyed: 36 like the singing class. 25 like the painting class. 13 like neither the singing class nor the painting class. What is the probability of a randomly chosen student liking both the singing class and the painting class?

• A$\frac{22}{30}$
• B$\frac{22}{42}$
• C$\frac{7}{30}$
• D$\frac{9}{30}$

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