One number has a prime factorization of 2 3 • 3 2, and another number has a prime factorization of 2 2 • 3 3. which of the following expressions would equal the greatest common factor of these two numbers?
2 5 • 3 5
2 3 • 3 3
2 2 • 3 2
2 • 3

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?