Which of the following sequences of clouds in ascending order would one meet 500 meters and above the mean sea level ?

• A. Stratus, Nimbus, Cirrostratus, Cirrus
• B. Nimbus, Cirrostratus, Cirrocumulus, Stratus
• C. Cirrostratus, Stratus, Nimbus, Cumulonimbus
• D. Stratus, Cirrostratus, Cumulonumbus, Cirrocumulus