If Within a Large Population No Mutations Occur,no Migration Occurs,all

Multiple Choice

If within a large population no mutations occur,no migration occurs,all mating is random,and each individual has an equal chance of reproducing,which of the following will probably happen?

A) No evolution will occur.
B) A bottleneck will occur.
C) A change in allele frequency will lead to rapid evolution.
D) Extinction will occur.