Statements : Some stars are planets. Some planets ar

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In these questions, two/three statements followed by two conclusions numbered I and II are given. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Give answer :

a: If either conclusion I or II follows
b: If neither conclusion I nor II follows
c: If only conclusion II follows
d: If both conclusions I and II follow
e: If only conclusion I follows

Statements :
Some stars are planets.
Some planets are galaxies.
Some galaxies are suns.
Conclusions :
I. All suns being galaxies is a possibility.
II. Some galaxies are stars

[RBI Grade B 4 Sep 2016]

A If either conclusion I or II follows

B If neither conclusion I nor II follows

C If only conclusion II follows

D If both conclusions I and II follow

E If only conclusion I follows