Earth Science: Which of the following describes the primary classifications of clouds based on their appearance and altitude in the atmosphere?
A) Cirrus, stratus, cumulus, and nimbus.
B) Cumulonimbus, altostratus, stratocumulus, and cirrostratus.
C) Altostratus, cirrocumulus, stratocumulus, and nimbostratus.
D) Cumulus, cirrostratus, altocumulus, and nimbostratus.
