Set A has K elements and set B has m elements, where m>k . Sets A and B have 2 elements in common. How many elements in the union of the two sets are members of only one of the sets? a) m+k-4b) m+k-2c)m-kd) m-k+2e) m-k+4

And can someone give me a thorough explanation? I have no idea how to do this...Thank you so much

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