Assume again that you work for a forest inventory project. You need to write a program in which users can enter stand information and numerically summarize the stand characteristics using data from field measurements. As a part of the program, you would like to create a new class named stand that implements the following: __- init_(self, acre, number, dbh): Creates a stand having the given area (in acre), number of trees, and average diameter at breast height (in feet) density(self): Calculates and returns the stand density (number of trees per acre) barea(self): Calculate and returns the basal area per acre* (in square feet per acre) *Basal area pre acre can be calculated by mean basal area at breast height times the stand density per acre (number of trees divided by the area in acre). Your class should: - implement __init_(self, acre, number, dbh), density(self), and barea(self) as defined above - have the file name "forestinv.py