Astronomy - The Gas Giants

Can you clarify the exact planets that will be the focus of the "Astronomy - Gas Giants" event? There is conflicting information as to whether Uranus and Neptune are considered "Gas Giants" so I would like to confirm with you, the event organizers. For example, the resources in the Science Olympiad rule manual provide different guidance: NASA - Gas Giants - Jupiter, Saturn; Ice Giants - Uranus, Neptune. Nine Planets - Gas Giants - Jupiter, Saturn, Uranus, and Neptune; Ice Giants - None