GMAT Sentence Correction (SC) | Re: People in Denmark have developed advanced techniques for

People in Denmark have developed advanced techniques for processing incineratorash and use them to recover annually 50,000 tons of scrap metal, from which are made new products, everything from steel beams to jewelry.


A. ash and use them to recover annually 50,000 tons of scrap metal, from which are made

B. ash and use them on an annual basis to recover 50,000 tons of scrap metal, from which is made

C. ash and use them to recover 50,000 tons of scrap metal annually, which is made into

D.