All rivers are winds
All clouds are rivers
All water are rivers
All winds are road
I. All rivers are road is a possibility II. All cloud can never be road
A If only conclusion I follows.
B If only conclusion II follows.
C If either conclusion I or II follows.
D If neither conclusion I nor II follows.
E If both conclusions I and II follow
I. All rivers are road is a possibility
II. All cloud can never be road
Neither Ist nor IInd - in both cases it is a definite relation