Find, if​ possible, the number of elements in sets​ A, B, and C using the given information on the right. Select the correct choice below and fill in any answer boxes in your choice.     A. ​n(A)=   ​n(B)=   ​n(C)=     B. It is not possible to find the number of elements in sets​ A, B, and C. n(A∩B)=5​,    n(A∩B∩C)=3​,    n(B∩C)=9​,    n(B−A)=8​,    n(B∪C)=19​,    n(A∩C)=6​,    n(A∪B∪C)=22.

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