Write the next sentence in the following story.

How to become a veterinarian
Gain experience in the veterinary field.
Preparing for a career as a veterinarian begins long before even graduating from high school. You will want to gain as much experience with animals and in the veterinary field as possible during high school and your undergraduate career.

Available choices:
(A). A high school diploma is always a good place to begin. If you choose a college (if your high school has one), your undergraduate education is likely to be a good place to start.;
(B). This experience will expose you to what veterinarians actually do, and will give you veterinary experience to put on your resume for veterinary school. In the united states there are 30 colleges of veterinary medicine which graduate about 3 , 000 veterinarians a year.;
(C). During your high school and after graduation, start building your resume and getting certification if you are applying to veterinary school. This is your first chance to share your information about your specialization with veterinary school and many other places.;
(D). It is essential that you have: a high school diploma a cv (high school diploma). An associate's degree Complete a bachelor's degree.;. The answer should be
(B).