PL/SQL Question

Please choose True or false for the following questions

1. A variable of array type always is required to call the constructor function for initialization.
2. The program can delete internal elements in a nested table.
3. When using the cursor for loop, the system will close the cursor for the program.
4. The command of PRAGMA EXCEPTION_INIT (exception_name, error_code) must be placed in the declaration section.
5. When the user defines a Nested table type, the maximum size must be defined.