Which Patient Statement Regarding the Use of a Normal Saline

Which patient statement regarding the use of a normal saline nasal rinse requires intervention by the nurse?

A) "I will lean over the sink with my head tilted to one side."
B) "I will insert the spout of the irrigating device in the upper nostril."
C) "I will slowly pour the normal saline into the nostril while breathing through my mouth."
D) "I will allow fluid to drain out the upper nostril to remove excess mucous from my nose."