Which two program declarations are correct for a stored program unit? (Choose two)
CREATE OR REPLACE FUNCTION tax_amt (p_id NUMBER) RETURN NUMBER
CREATE OR REPLACE PROCEDURE tax_amt (p_id NUMBER) RETURN NUMBER
CREATE OR REPLACE PROCEDURE tax_amt (p_id NUMBER, p_amount OUT NUMBER)
CREATE OR REPLACE FUNCTION tax_amt (p_id NUMBER) RETURN NUMBER(10,2)
CREATE OR REPLACE PROCEDURE tax_amt (p_id NUMBER, p_amount OUT NUMBER(10, 2))