Sapphire Toys actually sells more than toys. It also sells branded clothing, music CD's, and books for children. This expension of dealorship sales offerings is an attempt to increase the value of the customer base by _______

1) making low-profit customers more profitable

2) reducing the rate of customer defection

3) increasing the lngevity of the customer relationship

4) enhansing the growth potential of each customer through cross-sellimg