Policies, procedures and end-user training are effectiv…

Policies, procedures and end-user training are effective ways to mitigate:

A.
zero-day attacks

B.
attempted DDoS attacks

C.
man-in-the-middle attacks

D.
social engineering attempts

Explanation:
https://www.sans.org/reading-room/whitepapers/bestprac/defenses-zero-day-exploits-various-sizedorganizations-35562