Which of the following function is provided by 'server guard' patch management service?

Which of the following function is provided by ‘server guard’ patch management service?

Which of the following function is provided by ‘server guard’ patch management service?
A . fix vulnerability found in open source software using Alibaba self-developed patch
B . detect any vulnerability before it bursts
C . release official patches for any exposed vulnerability
D . stop hacker’s vulnerabilities probing

Answer: B