This is a test of commonsense with single/multi-choices. Complete the next sentence:

A man and woman are seen performing a tango routine that leads into another couple performing a tango routine. the new couple

Choices:
1). dance around and finally end by throwing open the back door and running to the camera..
2). dance together rhythmically both elegantly and with closer contact using their arms and legs..
3). continue performing around one another while spinning on it's ends..
4). continues dancing around the stage with one another and ends by holding a pose and presenting each other..
The answer is:
4).