1 .

In each question below are given two statements followed by two conclusions numbered I and II. 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. Give answer 1) if only conclusion I follows. 2) if only conclusion II follows. 3) if either conclusion I or conclusion II follows. 4) if neither conclusion I nor conclusion II follows. 5) if both conclusions I and II follow$Statements:$ Some rivers are hills. No hill is a mountain. $Conclusions:$ I. Some mountains are not rivers. II. Some rivers are not mountains.

[ A ]    if only conclusion I follows
[ B ]    if only conclusion II follows.
[ C ]    if either conclusion I or conclusion II follows.
[ D ]    if neither conclusion I nor conclusion II follows.
[ E ]    if both conclusions I and II follow
 Answer : Option B Explanation : Some rivers are hills (I) + No hill is a mountain (E) = I + E = O = Some rivers are not mountains. Hence, conclusion II follows. But I does not follow