Select all proper statements about genetic algorithms.

Group of answer choices

A$)$ Crossover is important to genetic algorithms because it guarantees genetic algorithms to arrive at global optimal solution.

B$)$ Each pair of chromosomes selected as parents do not necessarily crossover.

C$)$ Mutation probability should be kept significantly lower than crossover probability

D$)$ A and B

E$)$ B and C

F$)$ A and B and C

G$)$ None of the above