要想通过业务流程管理模式取得成功，企业必须做好以下几个方面的基础工作：( )。

A．建立多重职业发展通道

B．建立有效的组织保障

C．建立流程管理信息系统

D．培养复合型人才

E．重塑企业文化

The kinked demand model assumes that below the current price, the demand curve becomes:（）

A. less elastic because competitors will not decrease their prices.

B. more elastic because competitors will not decrease their prices.

C. less elastic because competitors will decrease their prices.