A company's customers are either old or new. A customer may be able or not able to provide an acceptable reference. The customer may either be known or not known to credit controller. A new customer who is able to provide an acceptable reference is allowed credit up to Sh. 1500,000.  An old customer that is able to provide an acceptable reference is allowed credit up to Sh. 3500,000.  A customer that is known is allowed a credit up to sh. 1,000,000.  A customer could be an individual or a firm. A firm is guaranteed a credit of sh. 50,000 while an individual is guaranteed credit of sh. 20,000. Draw a decision table to express the above logic.