Please answer ASAP the right answer only no random ones thank you

Populations of two species of grasshoppers are introduced to a meadow ecosystem. Each species is
adapted to eat grass and similar plants of the meadow, and they fill the same niche. According to
Darwin's ideas about competition, which of the following changes is MOST likely to occur?
a. Only one population will thrive in the meadow; the other population will decrease to
zero .
b. Either both populations will thrive in the meadow, or neither population will thrive.
c. Both populations will eventually remain constant at the same non-zero number
d. Both populations will eventually remain constant, but at different non-zero numbers.
e. Both populations will increase and decrease in a cycle