Species X Reproduces Asexually by Fission and Species Y Reproduces

Species X reproduces asexually by fission and species Y reproduces sexually.Consider that all other relevant characteristics are similar between these species.When the environment changes,then

A) species X and Y will have an equal chance of surviving.
B) species Y should have a better chance of surviving than species X.
C) species X should have a better chance of surviving than species Y.
D) neither species should have an advantage in surviving since organisms often become extinct when the environment changes.