Question

Nacreous clouds are a type of
Mammatus Clouds

Polar Stratospheric Clouds
Lenticular Clouds
Undulatus Asperatus​

Answer 1

Answer:

Nacreous clouds are often lenticular wave clouds and thus are found downwind of mountain ranges that induce gravity waves in the stratosphere. Their formation may also be associated with severe tropospheric storms. By day, nacreous clouds often resemble pale Cirrus.