In Tomatoes, Red (R) Is Dominant to Yellow (R), Tall

Essay

In tomatoes, red (R) is dominant to yellow (r), tall (D) is dominant to dwarf (d), and smooth (H) is dominant to peach or hairy (h).
(a)
How many different genotypes are there in relationship to these three characteristics?
(b)
How many different phenotypes are there in relationship to these three characteristics?
(c)
How many different homozygous pure-breeding forms can be produced?