Definition: 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 stop your dog from eating grass [title] Switch your dog's food. [step] Some dogs may nibble on grass because of a nutritional deficiency. Give your dog a different type of premium food for a week. <sep> (A) If you own a dog as part of your household, make sure to switch each time your dog eats grass. [substeps] For example, let's say you have an earlier snack, without the extra evening crunch, and you pair grass with a different type of premium food. (B) [substeps] That way, your dog won't be undereater. For example, your dog will put normal food with grass in one day and not get burnt. (C) Alternatively, switch your dog's diet so that it will remain healthy and regular for a week or two after adding fresh grass. [substeps] For example, you might change your dog's diet so that it eats a variety of different types of grass. (D) This may help alleviate its desire to eat grass. [substeps] Get a premium dog food that is high in fiber.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
D