In given questions, three statements are given followed by four conclusions numbered I,II,III and IV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: Some dogs are rats. All rats are trees. Some trees are not dogs.
Conclusions: I. Some trees are dogs.
II. All dogs are trees.
III. All rats are dogs
IV. No tree is dog.
(a) None follows
(b) Only I follows
(c) Only I and II follows
(d) Only II and III follows
(e) All follows.

Explanation

(b) Only I follows