The Troposphere (The Lowest Layer in the Atmosphere) of Venus

The troposphere (the lowest layer in the atmosphere) of Venus

A) is quite cold and thin
B) is a layer with quite a bit of water vapor, held down by the pressure of the layers above
C) has roughly the same air pressure as the troposphere of the Earth
D) resembles being about a kilometer or so under the Earth's ocean -- a huge mass of air keeps temperatures pretty much the same all over the planet
E) resembles the ozone layer of the Earth's atmosphere in many ways