Give a JavaScript regular expression to represent each of the following: i. a string containing only lower case letters, numbers, and underscores. The length of the string must be between 4 and 8 characters. the string must be between 9 and 16 characters. containing only upper case letters. The length of the string must ii. a string containing only upper and lower case letters. The length of i. snotin any character except upper case leters, c ili a string be at least 5 characters