关于which的问题

OG12SC107
Originally developed for detecting air pollutants, a technique called proton-induced X-rayemission, which canquickly analyze the chemical elements in almost any substance withoutdestroying it, is finding uses in medicine, archaeology,and criminology.
(A) Originally developed for detecting air pollutants, a technique calledproton-induced X-ray emission, which canquickly analyze the chemical elements in almost any substance withoutdestroying it,
(B) Originally developed for detecting air pollutants, having the ability toanalyze the chemical elements in almost any substance without destroying it, atechnique called proton-induced X-ray emission
(C) A technique originally developed for detecting air pollutants, calledproton-induced X-ray emission, which canquickly analyze the chemical elements in almost any substance withoutdestroying it,
(D) A technique originally developed for detecting air pollutants, calledproton-induced X-ray emission, which hasthe ability to analyze the chemical elements in almost any substance quicklyand without destroying it,
(E) A technique that was originally developed for detecting air pollutants andhas the ability to analyze the chemical elements in almost any substancequickly and without destroying the substance, called proton- induced X-rayemission,
答案（A）