Which of the following statements are valid for financial document number ranges? There are 3 correct answers to this question.

Which of the following statements are valid for financial document number ranges? There are 3 correct answers to this question.
A . The same financial document number range can be assigned to several types of documents.
B . All financial document number ranges may contain numbers and / or letters.
C . The financial document number ranges must be defined for the year in which they are used.
D . Financial document number ranges defined at the client level should NOT be superimposed.
E . The financial document number ranges are defined at the company code level.

Answer: A,D,E