Given the Thickness and Chemical Composition of Venus's Atmosphere, by How

Multiple Choice

Given the thickness and chemical composition of Venus's atmosphere, by how much would you expect its average surface temperature to change between day and night?

A) There should be almost no change in temperature.
B) by tens of K (like Earth)
C) by hundreds of K (like Mercury)
D) The answer depends on where Venus is in its orbit around the Sun.