Having won the football match, the players in our school returned, _____. [ ]

A. tired but happy

B. happy and tired

C. happily and tiring

D. happily but tiring

在商业银行的产品组合策略中，( )是指商业银行根据自己的专长，专注于某几类产品或服务的提供，并将它们推销给各类客户。

A．全线全面型

B．市场专业型

C．产品线专业型

D．特殊产品专业型