Consider the below class definition. Assuming standard naming conventions and typical modeling relationships, what is the interface being implemented? "public class LightRail : Train, IFareTransit" public class IFareTransit Train LightRail Question 20 (4 points) Is this analogy correct? "A blueprint of a house would be the object, the constructed version of the house would be a class" True False Question 21 (4 points) What is the return type of this method? "public decimal Computelnterest(int dollarAmount) [ 1 " decimal public- string int