7. About the clouds on the four giant planets, which one of the following statements is NOT correct?

(A) Jupiter and Saturn have multiple cloud layers.

(B) Water vapor is the only gas, which can condensate into clouds on the four giant planets.

(C) The clouds on the giant planets can be used to measure winds on the four giant planets.

(D) The clouds on the gas giant planets (i.e., Jupiter and Saturn) have different compositions from the clouds on the ice giant

planets (i.e., Uranus and Neptune).