Correct option is B
I. Some blankets are scarves.
II. All rooms are a blanket.

Conclusion (i): Some scarves are blankets.
This directly follows from Statement I, which states that "some blankets are scarves."
Therefore, Conclusion (i) is correct.
Conclusion (ii): Some rooms are scarves.
From Statement II "all rooms are blankets," but nowhere does it say that rooms are related to scarves in any way.
Just because "rooms" are a subset of "blankets" does not mean they have any connection with "scarves."
Therefore, Conclusion (ii) does not follow.
Thus, the correct option is (b) Only conclusion (i) follows.