A nurse is teaching a client who has a deep-vein thrombosis about a new prescription for warfarin. Which of the following client statements indicates an understanding of the teaching?

"I will stop taking the medication immediately if I experience nausea."

"I should contact my provider if I notice a pink-tinged color to my urine."

"I will increase my dietary intake of spinach."

"I will not be able to use an electric razor while I am taking this medication."