The relationship of jati to varna is most comparable to which of the following relationships?

A. The relationship of individual playing cards to a 52-card deck

B. The relationship of a group of related species of animals to the genus to which the species belong

C. The relationship of a compact disk to the songs contained on that disk

D. The relationship of a transmission to the car in which the transmission has been installed

E. The relationship of an updated version of software to the original version of that software