The sentence “You may even have to try a few systems out before you settle on one” (Para. 4) can be paraphrased ( 意译 ) as “_______.” A. you can go and live in some of those places if you like them B. you have to know each one of the systems though they are difficult to get C. you may need to be sure each system is right before you actually use it D. it could be better to try out some tools before deciding which one is best to use more regularly