Task: Question Answering
Input (English): A researcher is viewing a cell that has cell walls. To best narrow down the taxonomic group from which the cell belongs, which question should a researcher ask?  
 (A) What is the composition of the cell walls? (B) Is a cell membrane also present? (C) Can any substances pass through the cell walls? (D) Do the cell walls help the cell to survive?
Output (English): A