Could someone please explain and answer thisStudy the UML below. Explain the relation between all of the classes shown in the diagram, as

well as how they are used. Assume you are using this as a teaching example. For full credit,

you must discuss each class and mention how they fit into the whole.

Given the following declarations, which are valid?

Maker myMaker $=$ new Product$(...)$;

Maker myMaker $=$ new Retailer $.$