In each of the following questions one/two statements are given followed by two conclusions and assumption (I) and (II). You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions and assumption, if any , follow from the given statement.
Statements :
All hens are cocks.
No cock is black.
Conclusions :
I. All cocks are hens.
II. No hen is black.

Options

A. Only conclusion I is valid
B. Only conclusions II is valid
C. Both the conclusions are valid
D. Both the conclusions are invalid

Answer

B

Explanation

`A+ E rArr` E-type of conclusion
"No hen is black."
This is Conclusion II.