What kind of Certifcate and Provisioning Profile is needed for an iOS Apple TestFlight release?

I'm planning to release a beta version of my iPhone app on iOS 8 devices through the new Apple TestFlight app. What kind of Certifcate and Provisioning Profile is needed for that? Do I need a Production certificate and Distribution provisioning profile?

Available are these:

Certificate:
- Pending
- Development
- Production

Provisioning Profile:
- Development
- Distribution