1. Answer the following based on the following diagram. Polygon Trapezoid Rectangle Square a. Suppose we have an array, a that can hold only objects from the diagram. What would be the type of the array? b. Write a method that take in the array from part a, as a parameter. The method should return how many of each type of object there are. (You may describe your return with a brief comment if you want.) 2. Write a method to return all the objects in the array that have an area greater than the average area of all the objects. (You may assume each class has a method called getArea())