The value of a concept coin is inversely proportional to its radius. If a coin was melted and smaller coins with radii 1/4th of the original coin and thickness same as that of the original coin were made(using all the metal of the original coin), what will the ove0%^rall percentage increase in value after the operation?

A. 400%

B. 1500%

C. 1600%

D. 6300%

E. 6400%

Source:

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