"It would have been bad manners to make his guests feel foolish or uncomfortable." "Bad manners" means （）

A．It was funny of the businessman to read the two copies.
B．The audience should have listened to the speech attentively.
C．The secretary should have been more careful.
D．The businessman should have read the two copies of the original.

A．To give a speech instead of the businessman.
B．To type a one-hour speech for the businessman.
C．To choose a speech from a book of speeches and type it.
D．To make up a speech from some others and type it.