In each question below are three statements followed by two conclusions numbered I and II. You have to take the three 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 three statements disregarding commonly known facts.
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 conclusion I and conclusion II follow.