Large quantities of solid fuel ______consumed every day and too much carbon dioxide is sent into the air, which in turn _______ the going up of temperature.

1. A.
   is; results in
2. B.
   are; results in
3. C.
   is; leads to
4. D.
   are; results from

 Large quantities of solid fuel ______consumed every day and too much carbon dioxide is sent into the air, which in turn _______ the going up of temperature.

  A. is; results in    B. are; results in    C. is; leads to    D. are; results from