Question 13 from the ACS chemistry olympiad exam:

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