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: coendyxsbgxbkuhrwcsvtmspdiifterbqanrlgygfzszvpjsru

A: s
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Q: xquriasngktfmktcpfbufrzfxaeztxwmpgbdjzutpvczvqfl

A: f
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Q: bawruvraibtywxylqnsvyzatlygcctlsknmfarifvwhbd

A:
a
****