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

White text appears on the screen. The video now shows the woman using the polish she just made. a white screen

Select from: (a). appears with text giving a website address followed by the contributors of the video. (b). appears with the words " polish hard ". (c). appears with a group of blue letters along the border explaining the tests. (d). appears but this time with a printing picture in it.
The answer is:
(a).