Answer:
C and D I think??? Could be wrong. But definitely D is one of them.
Carbon Dioxide: o2c
Water: h2o
Oxygen: o2
Water is h2o because there are 2 hydrogen molecules and 1 oxygen molecule.
h2 = 2 hydrogen molecules
o = 1 oxygen molecule
2x+5x+5=180 so x has to be 25
I think it’s A
Sorry if I’m wrong
