连锁经营是指经营同类商品或服务的若干个企业(分店)，在同一核心企业(总部)的领导下采用规范化经营，按照统一的经营理念和经营方针，进行( )等共同的经营活动。

A．分散采购和集中销售

B．集中采购和分散销售

C．集中采购和集中销售

D．分散采购和分散销售

Which of the following is least likely allowed if a bond is non-refundable A corporation:（）

A. issues zero coupon bonds at a yield that is lower than the current rate on their bonds and redeems the old bond issue.

B. calls its nonrefundable bonds and issues common equity in their place.

C. gets a revolving credit line at the bank at a rate lower than that on their bonds and redeems the bonds.