Part I: Convert a Time of the Day to a String (20 points) Write a function hour minute.to.str) that takes two arguments, in this order: hour: an integer representing an hour of the day. Valid values are in the range 0-23, inclusive. * minute: an integer representing a minute of the hour. Valid values are in the range 0-59, inclusive These two numbers together represent a time of the day, assuming we are using a 24-hour time format. The function converts and returns the given hour and minute into a five-character string of the form ' hh:mm', where hh is a two-digit representation of hour, and mm is a two-character representation of minute. The examples below will help to clarify how the arguments are converted into the described string form. Note that if hour and/or minute are outside the valid ranges, the function must return 'error', with all lowercase letters as shown. Examples: Function Arguments Return Value 11, 23 5, 15 18, 9 6, 1 0, 0 26, 40 "11:23" "05:15" "18:09" "06:01" "00:00" error" Note: The quotation marks displayed in the example return values are there to emphasize that the return values are strings. Do not add quotation marks to the return values