Which statement best describes the relationship between plants and animals on earth?

Which statement best describes the relationship between plants and animals on earth?

a) Plants produce O2 and sugars from CO2
b) Animals produce CO2 and H2O from sugars and O2
c) Plants produce O2 and sugars and animals produce CO2 and H2O
d) Animals produce O2 and sugars and plants produce CO2 and H2