In Cats,short Hair (L)is Dominant to Long Hair (L); If

Multiple Choice

In cats,short hair (L) is dominant to long hair (l) ; if a short-haired cat of unknown genotype is crossed with a long-haired animal,and they produce one long-haired and one short-haired kittens,this would indicate that

A) the short-haired cat was pure-breeding.
B) the short-haired cat was not pure-breeding.
C) the long-haired cat was not pure-breeding.
D) the long-haired cat was pure-breeding.
E) none of these could be determined with only two offspring.