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If AtimesB={(3, 2),(3, 4), (5, 2), (5, 4...

If `AtimesB={(3, 2),(3, 4), (5, 2), (5, 4)}` then A is ____.

A

`{3, 5}`

B

`{2, 4}`

C

`{2, 3, 4, 5}`

D

`{3,2,1,6}`

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