Symmetric cryptography has advantages and disadvantages. Which of the following is not considered a disadvantage?

A.
Key management

B.
Scalability

C.
Key distribution

D.
Confidentiality

Explanation:
Symmetric cryptography has the following disadvantages: scalability,
key management, and secure key distribution. As the number of people who need to
communicate using symmetric cryptography grows, so does the number of keys that must
be managed. This means that symmetric cryptography increases in key management
complexity as the scale increases. Also the symmetric key must be delivered
"out of band" for secure transmission.