Mitochondria Independent Prokaryotes/Sybiotic Relations

[Funkfruit]

The belief that mitochondria were once independent prokaryotes that have now evolved a symbiotic relationship with cells is supported by all of the following evidence except that:

A.) Mitochondria have their own genetic information.
B.) Mitochondrial DNA is in a loop.
C.) Mitochondria do their own reproducing inside the cell.
D.) Mitochondria make all their own proteins.

[jonmoulton]

http://en.wikipedia.org/wiki/Endosymbiotic

There is a hint in the last sentence of the section titled:
The endosymbiont theory and mitochondria and chloroplasts