What is a difference between TACACS+ and RADIUS in regards to encryption?

What is a difference between TACACS+ and RADIUS in regards to encryption?
A . TACACS+ encrypts only the password, whereas RADIUS encrypts the username and password.
B. TACACS+ encrypts the username and password, whereas RADIUS encrypts only the password.
C. TACACS+ encrypts the password, whereas RADIUS sends the entire packet in clear text.
D. TACACS+ encrypts the entire packet, whereas RADIUS encrypts only the password.

View Answer

Answer: D