4. Objects (variables declared to be a class type) are typically passed to a function a. by value b. by reference or const reference c. by value or reference d. by value or const reference e. it makes no difference how they re passed 25. In C++, objects are returned by value a. always b. never c. If the returned object is stored in a local variable d. If the returned object is the receiver e. it makes no difference how an object is returned 26. The main reason for using pointers in CH+ is a. dynamic memory allocation b. modifying arguments passed to the parameters of a function c. holding the address of a local variable d. none of the above