You are employed as a developer at ABC.com. ABC.com has a single Active Directory domain,
named ABC.com.
You have created a new Windows Store app for ABC.com. You have accessed the new app via a
Windows 8 device.
You want to revert to the Windows Start screen without closing the app.
Which of the following actions should you take?

A.
You should consider using the Windows key.

B.
You should consider using the Windows key + C.

C.
You should consider using the Windows key + Tab.

D.
You should consider using the Windows key + I.

E.
You should consider using the Windows key + H.

Explanation:
http://blogs.msdn.com/b/hyperyash/archive/2012/08/28/windows-8-shortcuts.aspx