What Is the Difference Between Asynchronous and Synchronous Communication

Multiple Choice

What is the difference between asynchronous and synchronous communication?

A) Asynchronous is real-time communication; synchronous is one-way technology.
B) Asynchronous is communication that does not occur at the same time; synchronous communication occurs at the same time.
C) Asynchronous communication includes instant messaging; synchronous communication includes email.
D) Asynchronous communication is fast and instant; synchronous communication is collected at a single point in time.