Which Statement About Wind Turbines' Threat to Birds Is TRUE

Which statement about wind turbines' threat to birds is TRUE?

A) Every year domestic cats kill more birds than wind turbines.
B) Wind turbines threaten birds but not bats.
C) Wind turbines kill more birds than communication towers do.
D) Because of their low risk to birds, engineers do not give much thought to how wind turbines are placed.
E) All of these answers are true.