You need to ensure that the app displays an icon on the lock screen when the app receives a new item

You are developing a Windows Store app.
You need to ensure that the app displays an icon on the lock screen when the app receives
a new item.
What should you do?

A.
Declare the background task and enable the control channel property in
Package.appxmanifest. Call the ToastNotificationManager.CreateToastNotifier() method.

B.
Declare the background task and enable the Push notification property in
Package.appxmanifest. Call the BackgroundExecutionManager.RequestAccessAsync()
method.

C.
Declare the background task and enable the push notification property in
Package.appxmanifest. Call the ToastNotificationManager.CreateToastNotifier() method.

D.
Declare the background task and enable the control channel property in
Package.appxmanifest. Call the BackgroundExecutionManager.RequestAccessAsync()
method.