Nenet Needs to Have a Conversation with One of Her

Multiple Choice

Nenet needs to have a conversation with one of her company's executives. She has talked with him a few times, but she does not know him well. What should she do after arriving at his office and knocking?

A) She should ask, "May I come in?"
B) She should go inside and sit down.
C) She should say, "Hello, I am Nenet."
D) She should enter and close the door.
E) She should stand there silently until the executive says something.