The human egg has about $2000$ mitochondrial genomes, but sornatic cells have a range of hundreds to thousands. Which of the following is most likely to account for the difference?

OA$.$Somatic cells replicate their nuclear DNA at a faster rate than the oocyte

OR$.$ Lange mitochondria in oocytes can divide into many smaller mitochondria, and smaller mitochondria can replicate their DNA.

OC$.$Haploid onganelle genomes can replicate to form diploid or polyploidy genomes.

OD$.$Heteroplastic cells can give rise to homoplastic cells.