Afternoon tea was introduced in England by Anna, the 7th Duchess of Bedford, in the year 1840, _____ the evening meal was served fashionably late at 8 o’clock, thus _____ a long period of time between lunch and dinner.  

A．in her household… leaving

B．in whose household…leaving

C．in her household…left

D．in whose household…left

招标人应当确定投标人编制投标文件所需要的合理时间，自招标文件开始发出之日起至投标人提交投标文件截止之日止的时间应该为( )。

A．最短不得少于45天
B．最短不得少于30天
C．最短不得少于20天
D．最短不得少于15天