View the Exhibit to examine the PL/SQL code:
//IMG//
DECLARE -
x NUMBER := 5;
y NUMBER := NULL;
BEGIN -
IF x != y THEN yields NULL, not TRUE
DBMS_OUTPUT.PUT_LINE(x != y); not run
ELSIF x = y THEN also yields NULL
DBMS_OUTPUT.PUT_LINE(x = y);
ELSE -
DBMS_OUTPUT.PUT_LINE -
(Cant tell if x and y are equal or not.);
END IF;
END;
/
SREVROUPUT is on for the session. Which statement is true about the output of the PL/SQL block?
- A.The output is x = y.
- B.It produces an error.
- C.The output is x != y.
- D.The output is Can't tell if x and y are equal or not.