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 digits. The method signature should look like: public static string GenerateLowestNumber(string number, int n) Where the 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. The goal of this 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 (i. e. the method should remove n characters from the string, but it cannot re-order the characters). 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 "104".