which of the following could be true of two different species that have a competitive relationship in the same ecosystem
A) One species prey on the other
B) The relationship in mutually beneficial
C) They share the same niche
D) one species benefits while the other is neither help nor harmed

Question

which of the following could be true of two different species that have a competitive relationship in the same ecosystem
A) One species prey on the other
B) The relationship in mutually beneficial
C) They share the same niche 
D) one species benefits while the other is neither help nor harmed

mathmate · Answer

From wiki:
"Competition in biology, ecology, and sociology, is a contest between organisms, animals, individuals, groups, etc., for territory, a niche, or a location of resources, for resources and goods, mates, for prestige, recognition, awards, or group or social status, for leadership."
In general, competition means one prospers at the expense of the other.
Can you identify cases where this is the case (possible answer choices), or this is not the case (choices to be rejected).