The Presence of Fish Has a Positive Effect on Shoreline $\rightarrow$

The presence of fish has a positive effect on shoreline flowering plants. Which lines in the diagram reflect a negative direct effect?

A) fish $\rightarrow$ adult dragonfly
B) fish $\rightarrow$ pollinator
C) fish $\rightarrow$ larval dragonfly
D) adult dragonfly $\rightarrow$ plants