Which three actions should you perform in sequence?

Drag and Drop Question
You have a deployment of Microsoft System Center 2012 R2 Configuration Manager.
All client computers are configured as Configuration Manager clients.
You have an existing Configuration Manager deployment of an application named Appl. App1 is
deployed to a collection that contains the client computers in the engineering department.
From Configuration Manager, you add a new application named App2. App2 will replace App1.
You need to prevent further installations of App1 and to ensure that App2 will be installed on the
engineering department computers. App1 must be removed only once App2 is installed.
Which three actions should you perform in sequence? To answer, move the appropriate actions
from the list of actions to the answer area and arrange them in the correct order.

Answer:

Explanation:
https://technet.microsoft.com/en-gb/library/gg682031.aspx
https://technet.microsoft.com/en-us/library/gg682013.aspx