Two vectors A and B are added together and their vector sum is zero. What can you say about the magnitude and direction of A and B?

	1.	The magnitude of vector A is zero; the magnitude of vector B is not zero but its direction angle is zero ( Hint: the direction angle is an angle between a vector and the positive x - axis)
	2.	The vector A is vertical, while the vector B is horizontal with the same magnitude
	3.	The vector A is equal and opposite to vector B
	4.	The magnitude of vector A is twice bigger than the magnitude of B, but its direction angle is twice less than direction anle of B.