120. Which of the following is not a good description of Pretty Good Privacy (PGP)?

Вариант ответа 1 - A. It uses a web of trust between the participants

Вариант ответа 2 - B. It uses a hierarchical trust model

Вариант ответа 3 - C. It was created by Phil Zimmerman

Вариант ответа 4 - D. It uses passphrases