A nurse is collecting data on a client to check for orthostatic hypotension. Which of the following actions should the nurse take first?

A. While standing is part of the assessment, it should not be the first step. Starting in an upright position could put the client at risk of dizziness or falls if orthostatic hypotension is present. B. Sitting is an intermediate step, but before moving to sitting or standing, baseline measurements need to be obtained. C. This is the first step because a baseline blood pressure and heart rate in the supine position are needed before assessing changes with position changes. It ensures safety and allows accurate comparison to subsequent readings in sitting and standing positions. D. This is done after baseline measurements and during the progression to sitting and standing, but it is not the first step in the assessment.