The Effect of De- Forestation on the Global Warming Problem

The effect of de- forestation on the global warming problem is that

A) this makes the problem worse, because trees consume ozone from the atmosphere.
B) this actually helps solve the problem, because trees consume ozone from the atmosphere.
C) this actually helps solve the problem, because trees consume carbon dioxide from the atmosphere.
D) this makes the problem worse, because trees consume atmospheric carbon dioxide.
E) this has no effect on the global heating problem, although it has harmful effects in other ways.