Write the next sentence in the following story.

How to care for a gaited horse
Purchase a saddle that fits.
A good-fitting saddle is essential for a comfortable ride. Look for a salesperson who has experience with gaited horses to help you find the right one.

OPT: A. In a good saddle, your horse's scapula and haunches need to be able to stretch. You'll also want a saddle that fits snug (but not too tight), does not chafe, and allows your horse freedom to move. B. Fitted, stretchy and spacious saddles can allow more air to pass through the saddle, and for a comfortable ride, they can provide your horse an extra cushion. Saddles should be a snug fit, which means there should be a space between each toe. C. Castration saddles are generally most commonly used for older horses, so if you choose a saddle in a more delicate, more elastic material, make sure it is more comfortable. Use leather, with plenty of inner edges, and check with your veterinarian for verification to ensure the saddle is appropriate for you. D. Familiarize yourself with western saddles during your riding lessons. Horse riding saddles are also known as shoeing saddles.. The answer should be
A.