Sentence Correction (SC) | Re: Africa’s population of elephants declined by nearly a third from 2007

Africa’s population of elephants declined by nearly a third from 2007 to 2014, much of them because of poaching .

A. Africa’s population of elephants declined by nearly a third from 2007 to 2014, muchofthem because of poaching.
B. From 2007 to 2014, Africa’s elephant populationhas declined by nearly a third, mostly due to poaching.
C. Africa’s elephant population declined by nearly a third from 2007 to 2014, much of that decline a result of poaching. some odd construction like 'much