Which of the Following Statements Is TRUE

Multiple Choice

Which of the following statements is TRUE?

A) You should avoid using landlines for conference calls because they tend to be expensive to operate.
B) Conference calls are considered asynchronous communication.
C) You should use the "mute" button for conference calls but avoid using it, if possible, for videoconferencing.
D) It is considered rude to call in to a conference call early.
E) Since you cannot be seen during a conference call, it is acceptable to multitask.