Selecciona la opción correcta de los menús desplegables para completar el texto.
A patient can purchase a maximum of ( 3.6 g, 7.5 g, 9 g ) of pseudoephedrine in a calendar day, ( 7.5 g, 3.6 g, 9 g ) per month by mail order, and ( 9 g, 3.6 g, 7.5 g ) per month by retail.