A nurse is teaching a client who has multiple sclerosis. Which Of the following instructions should the nurse include in the teaching?

A. Heat can exacerbate MS symptoms (Uhthoff’s phenomenon) by worsening muscle weakness and fatigue. B. MS causes fatigue due to demyelination, so rest periods help conserve energy and prevent symptom flare-ups. C. Clients should remain as independent as possible to preserve mobility and self-esteem. D. Intense aerobic exercise can worsen fatigue; mild stretching and range-of-motion exercises are preferred.