A Security Administrator Is Developing Training for Corporate Users on Basic

A security administrator is developing training for corporate users on basic security principles for personal email accounts. Which of the following should be mentioned as the MOST secure way for password recovery?

A) Utilizing a single Qfor password recovery
B) Sending a PIN to a smartphone through text message
C) Utilizing CAPTCHA to avoid brute force attacks
D) Use a different e-mail address to recover password