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If A = {4, 7, 10, 13, 16, 19, 22} B = {5, 9, 13, 17, 20}C = {3, 5, 7, 9, 11, 13, 15, 17} D = {6, 11, 16, 21). What is A-C?

a.{4,10,16,19,22}
b.{3,5,7,9,11,13,15,17}
c.{5,9,13,17,20}
d.{4,7,10,13,16,22​