【单选题】
A、client who suffered blunt chest trauma in a car accident complains of chest pain, which is exacerbated by deep inspiration. On auscultation, the nurse detects a pericardial friction rub--a classic sign of acute pericarditis. To relieve chest pain associated with pericarditis, the nurse should encourage the client to assume which positionA、Semi-Fowler’s.B、Leaning forward while sitting.C、Supine.D、Prone.