What is the most logical next event?

How to recognize skin cancer in cats
Look for lumps or discoloration.
Skin cancer usually creates an area on the skin that is discolored and raised. When playing with your cat or cuddling up with it, take the time to look over its body for areas of discolored skin.

Options: (A). Also look for areas where the cat's fur is out of place, perhaps due to a growth on the skin underneath. If you find an abnormal area, have it looked at by a veterinarian.. (B). You should also check the cat's fur for matting, as this is usually the result of excess licking or rubbing. If they rub their fur on you, then this may be an indication of skin cancer.. (C). Pus or swelling are the few signs of skin cancer. Redness or swelling in the area of the cancer is a more common symptom.. (D). If you are not sure if your cat has lesions, take your cat to your vet. However, do not go ahead and treat the lesions if they look powdery, pale, tender, distinct, or painful..
(A).