Climatologist: Over the coming century, winter temperatures are likely ... ...

Climatologist: Over the coming century, winter temperatures are likely to increase in the
Rocky Mountains due to global warming. This will cause a greater proportion of precipitation to fall as rain instead of snow. Therefore, the mountain snowpack will probably melt more rapidly and earlier in the season, leading to greater spring flooding and less storable water to meet summer demands.

Which one of the following, if true, most strengthens the climatologist’s argument?


(A) Global warming will probably cause a substantial increase in the average amount of annual precipitation in the Rocky Mountains over the coming century.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in PT71 (Dec 2013): Logical Reasoning A