As a result of DNA testing, scientists learned the Black Death was A.the pneumonic plague, not the bubonic plague B.both the pneumonic plague and the bubonic plague. C.caused by fleas on cats and dogs.

As a result of DNA testing, scientists learned the Black Death was

A.the pneumonic plague, not the bubonic plague

B.both the pneumonic plague and the bubonic plague.

C.caused by fleas on cats and dogs.

D.caused by fleas on rats and vermin.

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