References - C++

1.	Which of the following statements is correct? Once the variable and the reference are linked they are tied together. Once the reference of a variable is declared another reference of that variable is not allowed.
	A. Only 1 is correct. B. Only 2 is correct. C. Both 1 and 2 are correct. D. Both 1 and 2 are incorrect.

2.	Which of the following statements is correct? We can return a global variable by reference. We cannot return a local variable by reference.
	A. Only 1 is correct. B. Only 2 is correct. C. Both 1 and 2 are correct. D. Both 1 and 2 are incorrect.

3.	Reference is like a _____.
	A. Pointer B. Structure C. Macro D. Enum

4.	Which of the following statement is correct?
	A. A reference is a constant pointer. B. A reference is not a constant pointer. C. An array of references is acceptable. D. It is possible to create a reference to a reference.

5.	Which of the following statement is correct?
	A. A reference is declared using * operator. B. Once a reference variable has been defined to refer to a particular variable it can refer to any other variable. C. A reference must always be initialized within classes. D. A variable can have multiple references.