12. Suppose U= {1, 2, 3, 4, 5, 6, 7, 8} is the universal set and P= {1, 2, 3, 4]. What is P'? (1 point)
O {5, 6, 7, 8}
O {1, 2, 3, 4, 5, 6, 7, 8}
O {1, 2, 3, 4}
O cannot be determined