GRE Text Completion: Manhatton-GRE填空Manhatton - E0WQTEK51A2J7T9Y=

(i)____________ comprehension of the character of Italian wine is impeded not only by labyrinthine complexities of vineyards and varietals, but also by fluctuations in environmental conditions from year to year, which render even the most reliable vintages subject to (ii)____________. A. An exhaustive B. efficient taxonomy C. A futile D. remarkable variance E. An irredeemable F. mitigating circumstances