Answer the following questions about the given sets. a. are the sets equivalent? explain. b. are the sets equal? explain. a = {6, 6, 6, 7, 7, 8, 9, 9) b = {9, 8, 7, 6} a. are the sets equivalent? explain. o a. the sets are not equivalent because n(a) = n(b). ob. the sets are equivalent because set a does not contain the exact same elements as set b. oc. the sets are not equivalent because set a does not contain the exact same elements as set b. od. the sets are equivalent because n(a) = n(b). b. are the sets equal? explain. o a. the sets are equal because set a contains the exact same elements as set b. ob. the sets are not equal because set a contains the exact same elements as set b o c. the sets are not equal because n(a) * n(b). od. the sets are equal because n(a) = n(b).