In the question three statements are given, followed by three conclusions, I, II and III. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.
Statement I: All Highways are lanes
Statement II: Some streets are highways
Statement III: All streets are expressways
Conclusion I: Some expressways are lanes
Conclusion II: Some lanes are streets
Conclusion III: Some expressways are highways
The basic diagram for the given statements is
I. Some expressways are lanes
From the basic diagram, some express ways are lanes. Hence conclusion I follows.
II. Some lanes are streets
From the basic diagram, Some lanes are streets. Hence conclusion II follows.
III. Some expressways are highways
From the basic diagram, Some expressways are highways. Hence conclusion III follows.
$$\therefore\ $$All conclusions I, II and III follow the given statements.
Hence, the correct answer is Option D
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