Task: Question Answering
Input (English): Question: A certain stock exchange designates each stock with a 1, 2 or 3 letter code, where each letter is selected from the 12 letters of the alphabet. If the letters may be repeated and if the same letters used in a different order, constitute a different code, how many diff stocks is it possible to designate with these codes?

 Option A: 2000

 Option B: 1900

 Option C: 1800

 Option D: 1884

 Option E: 1600
Output (English): Option D