In order to securely communicate using PGP, the sender of an email must do which of the following when
sending an email to a recipient for the first time?

A.
Import the recipient’s public key

B.
Import the recipient’s private key

C.
Export the sender’s private key

D.
Export the sender’s public key

Explanation:
See step 4 below.
1. When a user encrypts plaintext with PGP, PGP first compresses the plaintext.
2. PGP then creates a session key, which is a one-time-only secret key.
3. This session key works with a very secure, fast conventional encryption algorithm to encrypt the plaintext; the
result is ciphertext.
4. Once the data is encrypted, the session key is then encrypted to the recipient’s public key. This public keyencrypted session key is transmitted along with the ciphertext to the recipient.