i need programming help

i need coding help in C# and sql

You are tasked with implementing a method that returns the lowest possible number that could be generated after removing n characters from a string of method signature should look like public static stringGenerateLowestNumbertstring number, int n) number parameter is a string that contains a number (e.g. 4205123) and the n parameter represents the number of characters to remove from the string method is to return the lowest number that can be generated by removing n characters from the number provided while keeping the positions of the remaining characters relative to each other the same (ie. the method should remove n characters from the For example, if number is 4205123 and n is 4 the lowest possible number that can be generated after removing any 4 characters is 012: if number is 216504 and n is 3, the lowest possible number that can be generated after removing 3 characters is 1104