<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 48-year-old man is brought to the emergency department with a stab wound to his chest. The wound is treated in the emergency room. Three months later he develops a firm 4 x 3 cm nodular mass with intact epithelium over the site of the chest wound. On local examination, the scar is firm, non-tender, and there is no erythema. The mass is excised and microscopic examination reveals fibroblasts with plentiful collagen. Which of the following processes is most likely related to the series of events mentioned above?? A: Foreign body response from suturing, B: Poor wound healing from diabetes mellitus, C: Keloid scar formation, D: Staphylococcal wound infection, E: Development of a fibrosarcoma,  <response>: This is a question about abnormal wound healing in a patient who developed a firm nodular mass over the site of a previous stab wound. The description of the mass as being composed of fibroblasts and collagen on microscopy indicates that this is likely a keloid scar. Keloid scarring is characterized by overgrowth of scar tissue beyond the boundaries of the original wound. The other choices can be ruled out based on details provided in the question stem: there is no indication of a foreign body, diabetes, infection, or malignant tumor.C: Keloid scar formation 