Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
Statements:
I. All pens are blue.
II. Some blues are books.
Conclusions:
(I) Some books are pens.
(II) No books are pens.

​Statements:
I. All pens are blue.
II. Some blues are books.

​Conclusions:
(I) Some books are pens. (Not follow, because there is no any relation between book and pen.)
(II) No books are pens. (Not follow, because there is no any certain relation given)

So, Neither conclusion (I) nor (II) follows.

Thus, correct option is (a).