When the numbers are posted in a vertical line like that, it means strum them like a chord. So what you have here is two chords, the first one repeated. I would strum the bottom four strings on this one and see if it sounds right. Let your ear be the final judge. Tabs aren't always accurate, so you may have to alter them a bit. If you were meant to pick the strings individually, the numbers should be off-set a little, and not in a line like that. Of course, the tab-writer may have screwed up.

DC