Which are the four Galilean moons of Jupiter?
Io, Ganymede, Callisto, and Titan
Io, Europa, Ganymede, and Callisto
Europa, Ganymede, Io, and Triton
Europa, Titan, Ganymede, and Callisto
Io, Ganymede, Callisto, and Titan
Io, Europa, Ganymede, and Callisto
Europa, Ganymede, Io, and Triton
Europa, Titan, Ganymede, and Callisto