Some jovian storms such as Jupiter's Great Red Spot have been observed to last for years to decades. The reason why these large storms live so long s not well understood, but astronomers have begun to monitor these storms more closely with spacecraft and have discovered some common properties among them. Which of the following properties does contribute to the longevity of large jovian storms? A. Large size of storms B. Lack of a rocky surface to dissipate storm energy C. Ability to feed on smaller storms through mergers D. Association with opposing high-speed wind flows E. Atmosphere composed mainly of hydrogen and helium