TravelLink, a newcomer in the ride$-$sharing industry, launched recently to rival established giants like Uber, Lyft$,$ and Maven. Based in Vancouver, TravelLink currently operates in major cities across British Columbia and Alberta, with aspirations to expand nationwide. Led by Emma, an MBA graduate from Vancouver School of Business $,$ TravelLink's founding team includes some of her classmates who played key roles in developing the business.Module $1$: EnrollmentOlivia, Emma's friend, designed the TravelLink app, earning it a five$-$star rating for its user$-$friendly interface and impressive features. Lucas, TravelLink's Chief Architect, is spearheading the development of an enrollment module for both customers and potential drivers. Customers will enroll using their phone numbers, which will be validated to create a unique customer ID sent to them upon approval.During enrollment, customers provide basic personal information and have the option to add a credit card for payments. Once enrolled, customers automatically become eligible for TravelLink's discount program, where discounts are based on the number of ride transactions, and they can also earn loyalty points for additional rewards.Drivers are automatically enrolled in the rewards program, earning points based on the charged amount before tax, at a rate of $10$ points for every $$1($rounded up$).$ If a customer is also a TravelLink driver, the rate doubles to $20$ points for every $$1.$Module $2$: Data AnalyticsEmma aims to position TravelLink as a low$-$cost provider by monitoring and comparing ride rates with competitors. She plans to develop initiatives, such as offering free Wi$-$Fi and refreshments on longer rides, to attract new customers and build a strong customer base. Nathan, TravelLink's Chief Marketing Officer, is tasked with executing these ideas, starting with focus groups among customers and surveys for drivers to gather feedback and insights. Task: Create a class diagram with $6-10$ classes. Each class must have $3$ or more attributes, including key attributes. $($it must be a diagram$)$