A nurse enters an older adult client's room to insert a saline lock. The client asks the nurse, "Why do I need that? I am drinking plenty of fluids." Which of the following responses should the nurse provide?

"Your provider has prescribed antibiotic therapy to be administered intravenously every 6 hours."

Clients over the age of 65 must have a saline lock according to facility policy."

"It is quicker to administer medications intravenously in the hospital."

"We administer all medications intravenously to clients in this unit.