What is the respective percentage of CO2, N2, and O2 in the atmosphere?

PYQ SSC JE (Junior Engineer) 2023

1. A.

   CO2 = 0.08%, N2 = 70.08%, O2 = 29.95%

2. B.

   CO2 = 0.04%, N2 = 78.08%, O2 = 20.95%

3. C.

   CO2 = 0.03%, N2 = 68.08%, O2 = 30.95%

4. D.

   CO2 = 0.04%, N2 = 20.95%, O2 = 78.08%

Attempted by 7 students.