Install Reporting Services SharePoint Mode for SharePoint 2013

I am trying to follow the below MSDN article to install reporting services in sharepoint mode on an application server where sharepoint enterprise edition is already installed.

http://msdn.microsoft.com/en-us/library//jj219068.aspx

I hit a roadblock in step1 (at step 10) where I am not seeing the shared features called "Reporting Services - SharePoint" and "Reporting Services add-in for SharePoint Products".

I am unable to understand why those features are missing from feature selection page.

Any thoughts/ideas?

Thanks!