Question: If a database table of users contains the following rows, and `id` is the primary key, which statement would return only an object whose `last_name` is "Cordero"?

1. `User.where(first_name: "Carrie")`
2. `User.not.where(id: [1, 2, 4, 5])`
3. `User.find_by(first_name: "Cordero")`
4. `User.find(3)`

Answer: The correct answer of the above question is Option D:`User.find(3)`