Can't find Category template

I’m using Xcode 8.3.3 and there no longer appears to be a Category option. If you are having trouble finding this template option, I found that you can still select Category but it is hidden now.

The way I selected it was to create a new file, and on the pop-up window where you pick a new template, select Objective-C File and click Next. On the next screen, select Category in the File Type field.