Hello, on the Chem/OChem practice set class 2 question 17, I see that in the solution, they got the partial pressure of CO2 to be 0.04 atm (which is close to 4.1 x 10^-2 atm which is choice A), however, it states that D is the correct answer which is 3.4 x 10^-3 atm which seems farther from the answer it got from the solution.
Can you elaborate on why the answer choice is D?