Question: 2. Which is the primary key for the table below: Diagnose (Dia_ID, P_ID, D_ID, date, time_length) A. B. Dia_ID. C. P_ID, D_ID D. Dia_ID, P_ID,

2. Which is the primary key for the table below: Diagnose (Dia_ID, P_ID, D_ID, date, time_length) A. B. Dia_ID. C. P_ID, D_ID D. Dia_ID, P_ID, D_ID. E. None of them above

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