Business rules implement internal controls. Please review Table 6.1 in your text. Describe which business rules implement segregation of duties, and identify whether they are obligatory, prohibited, or allowed.

Oct.1	Purchases (or Inventory)	1,495
	Account Payable		1,495
	Purchased inventory on credit from Richardson Inc.
	Invoice 1125 dated Oct.1, terms 2/10, net 30
Oct. 11	Accounts payable	1,495
	Purchase discount		29
	Cash		1,465
	Paid Richardson Inc. for invoice 1125 dated Oct. 1 less 2% discount
	Debit to purchases or inventory account depends on weather the company uses a periodic or perpetual inventory system