Which of the Following Statements Correctly Describes Genetic Variation?
A)Genetic $N _ { e }$

Which of the following statements correctly describes genetic variation?

A) Genetic variation does not contribute to biodiversity.
B) Population size is always positively correlated with genetic variation.
C) Populations with low $N _ { e }$ are relatively susceptible to effects of bottlenecking and genetic drift.
D) Recent increases in population size of the northern sea elephant are probably related to high levels of genetic variation.
E) Cord grass populations that live in salt marshes require great genetic variation to thrive.