Lillian Steingruber works as an assistant for Devontae Booker, the CEO of Booker Investment Management. Which of the following lines should she use when answering phone calls?
This is Lillian Steingruber. May I help you?
a. Mr. Booker's assistant speaking. To whom am I speaking?
b. Hellq. Please state the purpose of your çall.
c. Mr. Booker's office. This is Lillian Steingruber. May I help you?
d. Hello. Whom do you wish to speak with?