Reduce the decision table in Figure to the minimum number of rules.

Conditions and Actions Rules 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sufficient quantity on hand Quantity large enough Y Y Y Y N NN NY Y Y Y NN N N for discount Wholesale customer Sales tax exemption Y Y N NY Y N N YY N N Y Y N N Y NYN Y N Y N Y N Y N Y N Y N Ship items and prepare invoice Set up backorder Deduct discount Add sales tax