Hi
I have not taken the CISSP exam yet.
I came across a CISSP tests book and found that the answer to some questions is like this.
1. answer a
2. answer b
3. All of the above
4. answer c
Whats does answer 3 "all of the above" mean?
answer a,b,c
OR
answer a,b
It seems like the book says the answer is a,b,c. I would like to confirm if CISSP official test has these kind of patterns?
I had posted one other CISSP question (I am very new to this forum). Surprised to see not even a single answer from this forum

I re-read the question today and didn't see any mistakes or anything that would seem inappropriate.
thank you
gn