Bowman and His Colleagues, Who Added Nutrients to the Alpine

Bowman and his colleagues, who added nutrients to the alpine tundra on Niwot Ridge, Colorado, found

A) phosphorus is the main nutrient limiting primary production in all meadows.
B) nitrogen is the main nutrient limiting primary production in all meadows.
C) phosphorus is the main nutrient limiting primary production in dry meadows.
D) nitrogen is the main nutrient limiting primary production in wet meadows.
E) nitrogen and phosphorus jointly limit primary production in wet meadows.