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Examine this statement:CREATE TABTE orders(sarial_no NUMBER UNIQUE,order_id NUMBER PRIMARY KEY ,order_date DATE NOT NULL,status VARCHAR2...

Examine this statement:

CREATE TABTE orders

(sarial_no NUMBER UNIQUE,

order_id NUMBER PRIMARY KEY ,

order_date DATE NOT NULL,

status VARCHAR2 (10) CHECK (status IN ('CREDIT', 'CASH')),

product_id NUMBER REFERENCES products (product_id),

order_ total NUMBER);

On which two columns of the table will an index be created automatically?

A.

SERIAL_NO

B.

ORDER_DATE

C.

PRODUCT_ ID

D.

ORDER TOTAL

E.

ORDER_ ID

F.

STATUS

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