which three lines of code are valid to use in the PL/SQL code of a menu item?

Assuming they are all syntactically correct, which three lines of code are valid to use in the PL/SQL code of a menu item? (Choose three)

A.
SET_BLOCK_PROPERTY(‘Orders’,ORDER_BY,’Customer_Id’);

B.
:Order.Order_Status := 1;

C.
EXECUTE_TRIGGER(‘my_trigger’);

D.
IF NAME_IN(‘Orders.Order_ID’) = 100 THEN …

E.
:global.customer_id := :customer.customer_id;

F.
WHILE x < :orders.order_id LOOP …