You are developing a Windows Store app by using JavaScript. The app persists a list of stocks in the
app’s settings. The stock list is identified by a key of stockList. The app must allow users to remove
their stock lists from the app’s settings. The following function call removes the stockList setting:
deleteAppSetting(“stockList”) ;
You need to remove only stockList from the settings storage without disrupting other settings.
Which code segment should you use? 
A.
Option A
B.
Option B
C.
Option C
D.
Option D