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Given that n(A?B)=8,n(A?B?C)=6,n(A?C)=13,n(B?C)=6,n(A?C?)=5,n(B?C?)=6,n(C)=21, and n(A??B??C?)=8, determine the number of element(s) in each of the disjoint egions labeled with Roman numerals in the Venn diagram below. There are element(s) in region I, element(s) in region II, element(s) in region III, element(s) in region IV, element(s) in region V, element(s) in region VI, element(s) in egion VII, and element(s) in region VIII.