Write the next sentence in the following story.

How to install apps from the windows store in windows 8
Access the windows store by clicking on the store tile which is normally located on the start screen.
You can also open the windows store by searching for store in the start screen. Note that the number displayed in the bottom left corner of the windows store live tile is the number of updates available for apps that you have already installed (or that came preinstalled with windows).

Available options:
[a]. Click on the " system preferences " in the system preferences panel. Select " downloads " from the pop-up options..
[b]. Open the extensions menu by clicking start button and clicking " options ". Select " accounts " from the menu which is typically at the bottom of the window..
[c]. Browse the applications in the windows store sorted by category. You can also search the store through the search charm..
[d]. Set up your windows store's default windows store proxy unit. These units are available from windows 10 or newer... The answer should be
[c].