Which statement describes the use of keys for encryption?

Which statement describes the use of keys for encryption?

• The sender and receiver must use the same key when using symmetric encryption.
• The sender and receiver must use the same key when using asymmetric encryption.
• The sender and receiver must use the same keys for both symmetric and asymmetric encryption.
• The sender and receiver must use two keys: one for symmetric encryption and another for asymmetric encryption.

Exam with this question: CCNA Security Chapter 7 Exam (CCNAS v1.2)