Case 1: Human Resources Application An application used by the human resources (HR) department needs to be improved You need to use various string manipulation properties and methods to ensure all data entered by a user are accurate and stored correctly In order to remove both dashes from the SSN, you should first a. use the Length property to see how many characters are in the variable

b. use the Insert method to insert dashes

c. use the index value to loop to examine each character in the variable, character by character

d. use the Contains method to see if any dashes are anywhere within the variable