4. boost SIM store sales RTR Class to give up Silver because it is the base of many stores, you can increase sales and SIM can do no more than the store's sales performance.
4. boost sales of SIM stores RTR Silver Class to increase due to the base of the store with a large number of sales for SIM that can actually be achieved and do not exceed the sales performance of stores.
4. Sales of stores RTR SIM Silver Class to increase, because as the base of many shops can increase sales Sim can do and not exceed the effective sales shops.