紧急请教GMAT语法题

Regardless of their form or function, all aerodynamically enhanced, curved objects made for throwing have been called boomerangs, ever since 1788, when Europeans saw Dharug-speaking men tossing "bumariny" in the area later known as Sydney.

A. Regardless of their form or function, all aerodynamically enhanced, curved objects made for throwing have been called boomerangs, ever since 1788

B. Regardless of their form or function, all aerodynamically enhanced, curved objects made for throwing have been called a boomerangs, ever since 1788

C. Ever since 1788, non-Australians have been called all all aerodynamically enhanced, curved objects made for throwing boomerangs, regardless of their form or function,from

D. Ever since 1788, any aerodynamically enhanced, curved objects made for throwing have been called a boomerangs, regardless of their form or function, from

E. Non-Australians have been called all aerodynamically enhanced, curved objects made for throwing boomerangs, ever since 1788, regardless of their form or function,from

I think it should be A.

For B, there is a mistake of singular/plural modification

For C and E, the logic is wrong, Non-Australians can not be called ...

For D, "from when" is not the right expression