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The characteristic features of Squamous Cell Carcinoma include:

  1. black or dark patches on the skin

  2. red or pink scaly papules or nodules, open sores or crusty areas that do not heal and may bleed easily

  3. red and inflamed skin

  4. cystic acne, inflammation, and scar formation

The correct answer is: red or pink scaly papules or nodules, open sores or crusty areas that do not heal and may bleed easily

Squamous Cell Carcinoma is a type of skin cancer that typically presents as red or pink scaly papules or nodules, open sores or crusty areas that do not heal and may bleed easily. These features are characteristic of Squamous Cell Carcinoma and distinguish it from other skin conditions. Black or dark patches on the skin (choice A) are more commonly associated with melanoma, another type of skin cancer. Red and inflamed skin (choice C) may indicate various skin conditions or ailments, but it is not a specific characteristic of Squamous Cell Carcinoma. Cystic acne, inflammation, and scar formation (choice D) are not typical features of Squamous Cell Carcinoma.