Which rows would be made permanent in the CUST table?

View the Exhibit and examine the structure of the CUST table.

Evaluate the following SQL statements executed in the given order:
ALTER TABLE cust
ADD CONSTRAINT cust_id_pk PRIMARY KEY(cust_id) DEFERRABLE INITIALLY DEFERRED;

INSERT INTO cust VALUES (1,’RAJ1); –row 1
INSERT INTO cust VALUES (1,’SAM); –row 2
COMMIT;
SET CONSTRAINT cust_id_pk IMMEDIATE;
INSERT INTO cust VALUES (1,’LATA’); –row 3
INSERT INTO cust VALUES (2,’KING’); –row 4
COMMIT;
Which rows would be made permanent in the CUST table?

A.
row 4 only

B.
rows 2 and 4

C.
rows 3 and 4

D.
rows 1 and 4