Use these sets to find the following. Identify any disjoint sets.Let U = {9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19}, M = {9, 11, 13, 15}, 
and 
(R ? N) ? M'
A. N, or {10, 12, 14, 16, 18}
B. M, or {9, 11, 13, 15}
C. ?; M' and (R ? N) are disjoint sets.
D. {9, 10, 12, 14, 16, 18}
Answer: A
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