What Is the Difference Between a "Whisperer" and a "Spy

What is the difference between a "whisperer" and a "spy" in an organization?

A) Whisperers provide a safe route for others to send information to higher ups while spies report their own information to the bosses.
B) Spies provide a safe route for others to send information to higher ups while whisperers report their own information to the bosses.
C) Whisperers are the same as gossipers, while spies tell the straight truth.
D) There is no difference between whisperers and spies.
E) Whisperers tend to operate in smaller organizations, spies in larger ones.