Given the following, determine the set (A' U B') n(AUB)'.
U= {1, 2, 3, 4, 5, 6, 7, 8)
A = {1, 2, 5, 6, 8)
B = {1, 3, 5, 6}

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. (AUB) n(AUB)' =

B. (AUB) n(AUB)' is the empty set.