Correct option is D
Statements:
All caps are socks.
All frocks are masks.
All masks are socks.

There is no direct or indirect link between frocks and caps — they are separate subsets within Socks.
So, no overlap is guaranteed.
Conclusion I does NOT follow.
Conclusion II: Some masks are caps.
Again, both are inside Socks but not necessarily overlapping. There is no statement linking masks and caps directly.
Conclusion II does NOT follow.
Correct answer is (D) Neither conclusion (I) nor (II) follows.