ইংরেজি ২য় পত্র প্রশ্ন

Identify the erroneous part in the following questions. If there is no error, choose option (E).3. The technology, developed in (A) coal-rich Germany in the 1920s, (B) involves partly burning coal (C) to turn it into a gas, then using a catalyst, usually a metal (D) make it a liquid. (E) No error