In cats, the gene for short hair (A) is dominant over the gene for long hair (a). A short-haired male cat is mated with a long-haired female, and four kittens are produced, two short-haired and two-longhaired. The genotypes of the parent cats are most probably

Parent 1-AA Parent 2-aa
Parent 1-Aa Parent 2-Aa
Parent 1-AA Parent 2-Aa
Parent 1-Aa Parent 2-aa