What does the option secret 5 indicate about the enable secret password?

Based on the username global configuration mode command displayed in the exhibit. What does the option secret 5 indicate about the enable secret password?
A.
It is encrypted using DH group 5.

B.
It is hashed using SHA.

C.
It is hashed using MD5.

D.
It is encrypted using a proprietary Cisco encryption algorithm.

Explanation:
When it comes to usernames, the options are plain-text, encrypted, or hashed. If the
command “username cisco password C1$C0” is used, the output will show the actual
plain-text password. The ability to encrypt this password requires the use of the “service
password-encryption” command. Now the same password will appear encrypted, with a
“7” in front of it to indicate cisco proprietary encryption. The “secret” is different…
secrets are hashed, and the hashing algorithm used by cisco is MD5.

Incorrect :
A: DH is not used by cisco for encrypting or hashing passwords in the IOS.
B: SHA is not employed by cisco in it’s hashing functions
D: Cisco does not have a proprietary hashing algorithm… it uses MD5.