Which one of the following types of cloud is characterized by continuo

Which one of the following types of cloud is characterized by continuous precipitation?

Cirrocumulus
Cumulus
Nimbostratus
Cumulonimbus
This question was previously asked in
UPSC NDA-2 – 2018
Nimbostratus clouds are low-to-mid-level clouds that are dark, diffuse, and shapeless, and are characterized by continuous precipitation (rain, snow, or sleet) that is typically light to moderate but widespread and persistent.
Different cloud types are associated with different forms and intensities of precipitation. Cumulonimbus clouds produce heavy, showery precipitation often accompanied by thunderstorms, while nimbostratus clouds are associated with steady, prolonged precipitation. Cirrocumulus are high-altitude clouds producing no precipitation, and Cumulus are fair-weather clouds, though larger cumulus congestus can produce light showers.
The prefix “nimbo-” indicates a cloud that produces precipitation. Thus, Nimbostratus (layered rain cloud) and Cumulonimbus (convective rain cloud) are the primary precipitation-producing cloud types. However, Nimbostratus is specifically linked with *continuous* precipitation.