Create an html form with dropdown menu for user to enter his credentials. There should be three options in drop down menu first option will be password validation, second option will be pin validation and third should be mobile validation, when user choose password validation then a text field for password must show to him that have validation rules password length must be greater than 5 and less than 10, when user choose second option then previous text field must hide and new field must show to user entering pin that have validation rules as it accept exact 4 digits, Third one should be for mobile number verification that will accept mobile phone digits length. Please Use JavaScript for validation.