Write full HTML and JavaScript code as illustrated below, please note that this question consists of 2 parts and you need to combine HTML and JavaScript code in order to accomplish those parts. PART1: [2.5 marks] Develop the following HTML form as shown below: -Airline Booking Form Flight Ref#: Booking Key: Class Type: Economy O Business O Check flight PART2: [3.5 marks] Write the JavaScript validation using Regular Expressions as described below: Flight Ref#, starts with EC or BC words followed by 3 characters of any type. Example: EC1#q Booking Key, starts with un uppercase letter, then one special character out of @Then followed by at least 3 numbers Class Type, you need to check that the user selects one of the class types shown above either Economy or Business. (NOTE: none of the radio buttons initially checked, so you need to write the JavaScript code as specified)