Which of the following statements correctly differentiates ketoses from aldoses?

Ketoses contain the carbonyl group on the first carbon atom, while aldoses have the carbonyl group on the second carbon atom.

Ketoses have an internal carbonyl group, and aldoses have a terminal carbonyl group.

Ketoses are complex sugars with a ketone group, while aldoses are simple sugars with an aldehyde group.

All of the above.