All/ people/earth/know/without/ ozone layer, not only/ human beings/ but also/all/plants and animals/ expose/ dangerous rays/sun

• A. All of people on earth know that without the ozone layer, not only human beings but also all plants and animals are exposed by dangerous rays from the sun.
• B. All people on earth know that without the ozone layer, not only human beings but also all plants and animals would be exposed to dangerous rays from the sun.
• C. All of people on earth know that without the ozone layer, not only human beings but also all plants and animals would expose to dangerous rays of the sun.
• D. All people on the earth know that without the ozone layer, not only human beings but also all plants and animals would expose to dangerous rays of the sun.