The most successful project manager usually ______ .

A．works their way up from assistants in the project office to full-fledged project managers, supplementing that experience with formal education

B．comes right from Havard's MBA program into managing very large projects

C．is considered the technical expert of their field

D．has considerable experience as a functional manager before moving in to the project management arena

人民币教育储蓄是为接受非义务教育积蓄资金，实行利率优惠、利息免税的一种零存整取定期储蓄存款业务。起存金额为（）元，每份本金合计不得超过（）元。

A、50元2万元

B、10元2万元

C、50元1万元

D、10元1万元