Neandertal MtDNA Recovered from Bones Found at the Original Neandertal

Neandertal mtDNA recovered from bones found at the original Neandertal site, Krapina in Croatia, and Mezmaiskaya Cave in Russia:

A) was too deteriorated to offer any conclusion about genetic affinity
B) all showed substantial differences when compared to modern human mtDNA
C) looked remarkably similar to modern human mtDNA
D) no mtDNA was found in these bones because they were all fossilized