Question: True or False? If false, give a counterexample (sets A and B). a. If A B with B infinite, then A is infinite. b. If

True or False? If false, give a counterexample (sets A and B).

a. If A B with B infinite, then A is infinite.

b. If A B with A infinite, then B is infinite.

c. If A B with B finite, then A is finite.

d. If A B with A finite, then B is finite.

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