Problem: You have been out exploring and sampling different environments in search of new eukaryotic organisms. You sample water from a lake, soil at the surface adjacent to the lake, and soil below the surface adjacent to the lake. You discover a new eukaryotic organism. Upon further inspection, you discover that there are mitochondrial genes in the nuclear genome of the organism, but you find no true mitochondria. From which sediment sample did this new eukaryotic organism come?
O the lake sample
O the soil sample below the surface
O the surface soil sample