Correct option is C

1. Some Cows are Bulls: (False)
Since all Bulls are Black, but not Cows. Therefore, this conclusion does not follow.
2. All Blacks are Cows: (False)
Since all Cows are Black, but it doesn't means all Blacks are Cows. There could be other Blacks (like Bulls) that are not Cows. So, this conclusion does not follow.
3. All Blacks are Bulls: (False)
Since all Bulls are Black, but it doesn't mean that all Blacks are Bulls (because Cows are also Black). Therefore, this conclusion does not follow.
None of the conclusions follow from the statements.