Identify the correct sentence.

A. There are exactly 22 ingredients in the soup but mostly it is celery carrots, mushrooms and onions.
B. There are exactly twenty-two ingredients in the soup, but mostly it is celery, carrots, mushrooms, and onions.
C. There are exactly 22 ingredients in the soup but mostly it is celery, carrots, mushrooms, and onions.
D. There are exactly twenty-two ingredients in the soup, but mostly it is celery carrots, mushrooms and onions.