When assessing the lower extremities of an older adult and noted is a small ulcer between the person's great toe and second toe. The ulcer has well-defined edges and there is no bleeding; however, there is a small amount of necrotic tissue present. This wound is most likely a(n):

A. Arterial ulcer: Arterial ulcers typically appear on the toes, between the toes, or on pressure points of the feet. They have well-defined, “punched-out” edges, minimal drainage, and often contain necrotic tissue due to poor arterial circulation. These ulcers result from ischemia and are usually painful, with surrounding skin that may appear cool, pale, or shiny. B. Surgical wound: Surgical wounds occur at controlled incision sites following an operation and generally have clean, linear edges without necrosis unless complications develop. Their location and history are distinct from spontaneous ulcers caused by vascular insufficiency. C. Venous ulcer: Venous ulcers are commonly located on the lower legs, particularly around the medial malleolus. They tend to be shallow, have irregular edges, and produce significant exudate due to venous stasis, unlike the dry, well-defined ulcer described between the toes. D. Pressure ulcer: Pressure ulcers develop over bony prominences such as the sacrum, heels, or hips, resulting from prolonged pressure and reduced perfusion. They are less likely to appear between toes and usually exhibit varying drainage or tissue depth depending on the stage.