Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Input: [header] How to care for a diabetic dog [title] Make a plan for your dog's health with your vet. [step] Diabetes requires swift treatment, but the treatment plan depends on your dog's current health. Insulin is usually required, and the vet will determine the amount. <sep> (A) [substeps] Diabetes can be caused by arthritis or inflammatory bowel disease (dap), as well as weight gain or joint problems. If your dog has any of these, your vet will assess your dog's needs for treatment. (B) The vet may suggest adding insulin to your dog's diet to control blood sugar levels. [substeps] Sometimes feeding your dog food along with the medications your vet prescribes can cause your dog to overeat, resulting in him eating less. (C) The vet will most likely suggest treatment methods based on the severity of your dog's condition and the estimated amount of your dog's insulin consumption. [title] Help your vet determine an appropriate treatment. (D) You also may have to make certain lifestyle changes. A long talk with a veterinarian is the first step [substeps] A simple test can diagnose diabetes in your dog.
Output:
D