What Would Be the Result of an Increase in the Amount

Multiple Choice

What would be the result of an increase in the amount of high altitude,thin clouds?

A) A cooling of the planet through a process called cloud-albedo forcing.
B) A warming of the planet through a process called cloud-greenhouse forcing.
C) There would be no effect on the temperature of the atmosphere because insolation is constant.
D) A cooling of the planet through a process called Reyleigh scattering.