Well that would have been really nice to know that I’m supposed to choose only one, not both. Sure, maybe I’m just dumb, but it should be more clear in the description that they are alternatives of each other, not that you need to use both.
By the way, this is directly addressed in the FAQ. Take a look around the FAQ first if you have any more questions, because it’s quite extensive. (Of course, if you can’t find your answer there, feel free to ask on the forums again.)