LetUrepresent the set of people in a certain community who were asked if they subscribe to an information source.

LetD={xU|xsubscribes toThe Daily Informer}

and

N={xU|xsubscribes toNews Magazine}

(Assume these sets are not disjoint.)Write the set that represents the set of people surveyed who subscribe to The Daily Informer but not News Magazine.

a)N^cD

b)(ND)^c

c)N^cD

d)N^c D^c

e)D