Ways to pursue Differentiation successfully: ________ 成功采取差异化战略的途径包括：

A、controlling tatal costs 控制总成本

B、creating products which are superior to competitors 创造出由于竞争对手的产品

C、building superior distribution channels 建立优良的营销渠道

D、offering superior after sales service 提供高品质的售后服务

E、creating a strong brand name through design, innovation, advertising, and so on 通过设计、创新、广告等创立强大的品牌