Whether the world is Euclidean or non-Euclidean is still an

"Whether the world is Euclidean or non-Euclidean is still an open question. However, if a star's position is predicted based on non-Euclidean geometry, then when a telescope is pointed to where the star should be it will be there. Whereas, if the star's position is predicted based on Euclidean geometry, then when a telescope is pointed to where the star should be it won't be there. This strongly indicates that the world is non-Euclidean."

Which one of the following best expresses the main idea of the passage?

a.The world may or may not be Euclidean.
b.The world is probably non-Euclidean.
c.The world is non-Euclidean.
d.The world is Euclidean.
e.The world is neither Euclidean nor non-Euclidean