Friend Recruitment Code?

[Acquilla]

If you invite three friends and they each subscribe for 30 days, do you get the 90 day reward based on the total of all of them? Or would one of those friends have to continue their sub for 90 days?

I could be wrong, but I'm pretty sure they don't add up. So you'd need at least one of them to do 90 days before you get the stuff.