Which document values does the user tolerance group control?

You are posting an incoming payment against an invoice .

Which document values does the user tolerance group control? There are 2 correct answers to this question.
A . The payment amount allowed for each customer open item
B . The total amount (sum of all line items) allowed to be posted
C . The cash discount amount (absolute value) allowed for a line item
D . The cash discount percentage allowed for the complete document

Answer: B,C