Which prerequisites must be fulfilled before you can use negative postings? Note: There are 2 correct answers to this question.

Which prerequisites must be fulfilled before you can use negative postings? Note: There are 2 correct answers to this question.
A . The company code must permit negative postings.
B . The reversal reason must allow alternative posting dates.
C . The reversal reason must allow negative postings.
D . The posting key must permit negative posting.

Answer: A,C