Multi-choice problem: Continue writing the next sentence in this paragraph:

How to write a letter to your teacher 
Choose a card or paper that you think your teacher will like. 
You can write your letter on a premade card or on a white sheet of paper. If you're using a card, pick one that makes you think of your teacher.

pick from the following.
[A]. Test the card out a little in advance so that the recipient will be able to read your letter. You can buy electronic or microchip test designs to test your own handwriting.;
[B]. Write a few lines in your favorite card or letter. Consider using a clear and descriptive couple lines to let your teacher know that you like it.;
[C]. Send your letter or paper using a typed or scratch-off format. When writing a letter, a typed printing will help the letter stay legible with its body shape and clarity, while scratch-offs may make it more difficult to look at the letter.;
[D]. Ask your parents or guardian if they have any cards you can use. They may also be willing to take you shopping for a new card.;
[D].