View the Exhibit to examine the PL/SQL code:


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?