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Consider the relation R = {F, T, D, N, S) and the set of functional dependencies K = {F-D, {D, T) -F, {F, N) S)

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Consider the relation R = {F, T, D, N, S) and the set of functional dependencies K = {F-D, {D, T) -F, {F, N) S) What is the key for R? Select one: O a. {T, N) Ob {F. D} Oc. {F, T, N} od {F, T)

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