A nurse is teaching a client who has angina about nitroglycerin sublingual tablets. Which of the following statements should the nurse include in the teaching?

A. While the administration schedule is partly correct, the maximum number of doses should not exceed 3 in 15 minutes without contacting emergency services. B. Nitroglycerin is not a first-line treatment for hypertension; it is primarily used for angina relief. C. Nitroglycerin does not dissolve clots; it works by relaxing and dilating blood vessels to improve blood flow and reduce chest pain. D. This statement accurately describes the action of nitroglycerin, emphasizing its role in dilating blood vessels and improving oxygen delivery to the heart muscle.