Answer the following statements true (T) or false (F)

1. Destructor functions are often used to free memory that was allocated by the object.
2. While a class's member functions may be overloaded, the constructor cannot be overloaded.
3. When using smart pointers to dynamically allocate objects in C++ 11, it is unnecessary to delete the dynamically allocated objects because the smart pointer will automatically delete them.
4. When passing a file stream object to a function, you should always pass it by reference.

1. T
2. F
3. T
4. T