The Cassini Observations of Jupiter Suggest That, Contrary to Previous

The Cassini observations of Jupiter suggest that, contrary to previous modes, the dark belts on Jupiter are:

A) holes in the cloud bank through which the dark planet surface can be seen.
B) regions in which the gas is falling.
C) dust clouds from volcanoes that have been spread around the planet by very strong winds.
D) regions in which the gas is rising.