This question is related to System Models. A navigation system is to be developed to help the delivery riders to deliver food to their customers. You are asked to design the UML Class Diagram for the system based on the following: A navigation device belongs to only one rider's vehicle. A navigation device can calculate at least zero route. In return, every route can be calculated by many navigation devices. A route has at least one road segment, and every road segment belongs to many routes. A road segment is defined by road name as well as start and end points. "Navigation device with congestion avoiding" is a specialization of the navigation device, and it queries many traffic jam information. Your diagram must include any related relationships i.e. generalization, aggregation and/or composition and multiplicity