Why are violins made by Stradivarius in the early 1700s far superior to ... ...

Why are violins made by Stradivarius in the early 1700s far superior to most other violins? Some experts suggest secret varnishes, but there is no evidence for this. However, climatologists have found that in the 1600s and early 1700s weather patterns in the region of Italy where Stradivarius worked affected tree growth to produce wood with special acoustic properties. Therefore, it is likely that _______. Which one of the following most logically completes the argument?
(A) some other Italian violin makers in the early 1700s produced violins that equaled the quality of Stradivarius violins
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Oct 2012 LSAT (PT67): Logical Reasoning A