What is the primary strength of symmetric-key encryption?

What is the primary strength of symmetric-key encryption?

A.
It allows easy and secure exchange of the secret key.

B.
It creates a ash?of a text, enabling data integrity.It creates a ?ash?of a text, enabling data integrity.

C.
It can encrypt large amounts of data very quickly.

D.
It provides non-repudiation services more efficiently than asymmetric-key encryption.