The Following Figure Shows Studies in a Stream Where Enclosures

Multiple Choice

The following figure shows studies in a stream where enclosures were setup either with trout or with no trout.Which statement is a correct interpretation of the graph about trout,invertebrates,and algae?

A) If trout are present in a system,alga production is low and invertebrate population levels are also low.
B) If trout are present in a system,alga production is high and invertebrate population levels are also high.
C) If trout are present in a system,alga production is high and invertebrate population levels are low.
D) Trout do not seem to affect the alga production;only the invertebrate populations are affecteD.
E) Trout do affect the alga production but not the invertebrate populations.