MCQ
If $A = \{x, y\}$ then the power set of $A$ is:
- A$\{xx, yy\}$
- B$\{f, x, y\}$
- C$\{f, \{x\},\{2y\}\}$
- ✓$\{f, \{x\},\{y\},\{x, y\}\}$
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