During Inspection of the Soft Tissue,the Therapist Notes Redness of the Skin

During inspection of the soft tissue,the therapist notes redness of the skin over the lateral aspect of the knee.What does this tell the therapist?

A) Cyanosis usually indicates a lack of oxygen and excessive carbon dioxide in the superficial blood vessels.
B) Pallor usually indicates a decrease in blood flow or blood hemoglobin secondary to anemia or shock.
C) Erythema usually indicates increased blood flow and inflammation in a localized area of the body.
D) Clubbing usually indicates chronic hypoxia associated with cardiovascular or respiratory disease.