Which one of these plugs will work in South Africa?

Today I picked up a travel converter at the store. It has all of the different electric adaptors, but I'm not really sure which one I need. It doesn't come with a travel case, and I don't want to take all of the different adaptors because I'm afraid I'd lose one, and there's really no point in bringing the ones I don't need. Two different adaptors say that they are for Africa, but they look completely different and I've been having trouble finding online which one I need. One has two small round prongs, the other has three large flat prongs. If anyone knows which one will work in South Africa, I would really appreciate it!





Update: I think I've figured out that I'll be needing the bigger of the two plugs. I'm going to take both of them just in case though!