Answer:
C.less oxygen
Explanation:
If an acid contains the suffix 'ic', it means that it is usually an acid that contain more oxygen than the acid that contains the ending 'ous'. This is almost a convention in chemistry.
For instance, nitric acid is HNO3 whereas nitrous acid is HNO2. We can see that nitric acid posses more oxygen atoms than nitrous acid. This example buttresses the answer given above.
