Task: Question Understanding
Input (English): Question: A student is trying to identify a mineral that has a nonmetallic luster and is black. It can also be scratched with a fingernail. According to the mineral reference sheet, the unidentified mineral is most likely (A) mica. (B) magnetite. (C) hornblende. (D) quartz.?
Output (English): mineral, nonmetallic, luster, black., scratched, fingernail., mineral, reference