Based on observations of the cosmic microwave background, the overall composition of the universe is approximately:
a. 100% ordinary (baryonic) matter
b. 1% ordinary (baryonic) matter, 99% non-ordinary (nonbaryonic) dark matter
c. 15% ordinary (baryonic) matter, 85% non-ordinary (nonbaryonic) dark matter
d. 5% ordinary (baryonic) matter, 27% non-ordinary (nonbaryonic) dark matter, 68% dark energy