Which of the Following Statements Correctly Represents the Variation Seen

Which of the following statements correctly represents the variation seen between the niches for forest birds and that of algae and plants?

A) Increased foliage height diversity reduces bird species diversity; algae niches are defined by their nutrients.
B) Algae species use nutrients at the same rates; bird species diversity increases with foliage height diversity.
C) Environmental complexity for plants is based on nutrient availability, moisture, and pH; bird species diversity increases with foliage height diversity.
D) Increased foliage height diversity reduces bird species diversity; algae niches are defined by fish diversity.