In this task, you are given a string with duplicate characters ocurring in the string. You need to return the character which is ocurring with the maximum frequency. In case of a tie, return the character with the least ascii value.

[Q]: krzesomikagodqthmvoecdqqamqjwadcurjtkwytqc
[A]: q


[Q]: vvbnezdtsjsrzgqluapxfgrkavghmcqovwuogqtndrbrvpv
[A]: v


[Q]: pdeybavafjbnqexylvgrqqmlptxlsbcwgswantiv
[A]:
a