Which of the following statement is true according to the passage
A．The author is encouraging five-year-olds to address grownups by their first names, usually very formal and faithful.
B．First-namers claim they are motivated by nothing worse than uncontrollably high-spirited friendliness.
C．The author thought the secretary often dare not call their boss the first name.
D．He finds the secretary is often unwilling to pass a message.