[SC悬赏令] 确认一下这里的their会不会有指代不清的嫌疑

A Regardless of their form or function, all aerodynamically enhanced,curved objects made for throwing have been called boomerangs by non-Australiansever since 1788,

B Regardless of their form or function, any aerodynamically enhanced,curved object made for throwing has been called a boomerang by non-Australiansever since 1788,

C Ever since 1788, non-Australians have called all aerodynamicallyenhanced, curved objects made for throwing boomerangs, regardless of their formor function, from

D Ever since 1788, any aerodynamically enhanced, curved object made forthrowing has been called a boomerang by non-Australians, regardless of its formor function, from

E Non-Australians have called all aerodynamically enhanced, curvedobjects made for throwing boomerangs ever since 1788, regardless of their formor function, from