Which of the following is an example of an environment with a carrying capacity that has been overloaded? 
 A. A lake where people go fishing and remove several fish a day. 
 B. A forest where deer are dying because they cannot find enough to eat. 
 C. A cave where hundreds of bats are living, reproducing and dying so that the number of bats in the cave stays about the same. 
 D. A home where 5 people live and each have their own room.