Question A.2 (8 Points) Explain this statement: if there were no class inheritance, we would not need protected variables as private variables will do. Question A.3 (10 Points) Please give an English description for all the strings that match the following pattern: "Hello s+World!s*" For this and the following questions about patterns, please look up online resources, e.g., http://www.vogella.com/tutorials/JavaRegularExpressions/article.html