(A). a beginner violinist became a professional violinist in six months.
(B). a boy who told you that he flew through the sky with his own power to come and see you
(C). humans can live forever with a good diet and exercise.
(D). When we die, what we call souls, would absolutely ascend or descend to another plane.
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There is no proof for a boy flying through the sky with his own power or humans living forever (do you see any 1000 year old humans) or souls ascending or descending. The obvious answer is "A". People have become professional violinist playing for money in six months or less. You don't have to be great to make money playing the violin.