Which three actions should you perform in sequence?

Explanation/Reference:
Note:
* To handle events that occur to items in apps for SharePoint
1. In Visual Studio, open Solution Explorer, and then choose the project node of the app for SharePoint.
2. (box 1) On the menu bar, choose Project, Add New Item.
3. (box 1) In the Templates pane, choose Remote Event Receiver, specify a name in the Name box, and then choose the Add button. The SharePoint Customization Wizard appears.
4. (box 2) On the Choose Event Receiver Settings page, choose an event receiver type, such as List Item Events.
5. Set the event source to a list whose events you want to handle, such as Announcements.
6. In the list of events to handle, select the check box next to each event that you want to handle, such as An item was added, and then choose the
Finish button.
A web application is created with a web service that contains a code file.
7. (box 3) In the code file for the web service, add code that will execute every time the events that you specified occur.
Reference: How to: Create a remote event receiver