Which one is correct w.r.t. RDBMS? – McqOptions

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1.	Which one is correct w.r.t. RDBMS?
A.	primary key ⊆ super key ⊆ candidate key
B.	primary key ⊆ candidate key ⊆ super key
C.	super key ⊆ candidate key ⊆ primary key
D.	super key ⊆ primary key ⊆ candidate key
Answer» C. super key ⊆ candidate key ⊆ primary key

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