100. Consider the following : 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide Excess of which of the above in the environment is/are cause(s) of acid rain?

Click on the right option
a) 1, 2 and 3
b) 2 and 4 only ✅
c) 4 only
d) 1, 3 and 4