A true$-$breeding black rabbit is crossed with a true$-$breeding white rabbit. If the black color trait is dominant, which answer option represents the expected phenotype of an $F_2$ generation consisting of eight individuals?

$4$ black rabbits, $2$ white rabbits, $2$ gray rabbits

$0$ black rabbits, $0$ white rabbits, $8$ gray rabbits

$6$ black rabbits, $2$ white rabbits, $0$ gray rabbits

$2$ black rabbits, $2$ white rabbits, $4$ gray rabbits

$8$ black rabbits, $0$ white rabbits, $0$ gray rabbits