Phase transition from gas to solid Question 13 from the ACS chemistry olympiad exam:


  The phase transition from gas to solid is called 
  \begin{align}
&amp;\text{(A) condensation.} &amp; \text{(B) evaporation.} \\ 
&amp;\text{(C) polymerization.} &amp; \text{(D) sublimation.}
\end{align}


I am pretty sure the answer is deposition, which is not listed, but yet the answer is (A) condensation [scroll to the end of the question paper to see the answer key].

Did the chemistry olympiad make a mistake, or is there something obvious that I am missing?
I guess the diagram of phase changes you have in mind looks like this:



Indeed this says deposition is the right name for a gas-to-solid phase transition and I believe that this is the only correct term. 

The only thing I can argue why it is obvious here that condensation is the right answer (at least the closest) is that this is the only answer that gives a transition from fluid to solid. B and D are the other way around, and C is not really a phase change (although it could result in one).