Scleroderma is an autoimmune disease in which repeated bouts of inflammation result in fibroblasts depositing excess collagen in the skin. Which of the following would be a symptom of scleroderma?Increased flexibility in the skin.Weakening of blood vessels in the skin.Less flexibility in the skin.Differentiation of skin muscle cells into epithelial cellsDifferentiation of skin epithelial cells into muscle cells.