True/False Indicate whether the statement is true or false. 1. The C+ friend relationship is always one-sided. --2. You are required to use the word friend within the function name of a friend function. 3. In addition to overloading, compilers often need to perform coercion or casting when the+ symbol is used with mixed arithmetic. 4. When you overload the operator [1 function for a class, the parameter is required to be an integer 5. A derived class is also called a subclass or descendant. 6. To be truly "object-oriented," a programming language must allow inheritance. 7. Function templates cannot use variables of multiple types. 9. The purpose of container classes is to manage groups of other classes. 10. The general principle underlying good object-oriented error handling is that any called function should check for errors and handle an error if one is found