Question: For the data table below, identify a column or group of columns that make up a candidate primary key: first_name last_name street_address city state postal_code

For the data table below, identify a column or group of columns that make up a candidate primary key:

first_name last_name street_address city state postal_code
John Smith 79873 Hudson Alley Washington District of Columbia 20566
Mary Smith 79873 Hudson Alley Washington District of Columbia 20566
Darcy D'Alessandro 6777 Hanson Center Lancaster Pennsylvania 17622
John Smith 147 Memorial Junction Indianapolis Indiana 46216

A.first_name + last_name

B.first_name + last_name + street_address

C.last_name + postal_code

D.street_address

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