To accurately answer this question, I would need to analyze the image of the map you referenced, which I cannot do as I cannot view images directly. However, based on my knowledge of the geography of Africa:
- The Democratic Republic of the Congo (DRC) is a large country located in Central Africa, predominantly in the western part of the continent.
- Nigeria is located in West Africa, to the southwest of the DRC.
If you know the letters on the map correspond to specific countries, you should choose the option where the DRC and Nigeria are matched correctly with their respective letters.
If you can provide more context or descriptions of the map, I could give you a more informed answer. Otherwise, please cross-reference the lettered locations with your knowledge of African geography.