Task: Question Answering
Input (English): The large-scale development of personal automobiles started in the early 1900s. Which of the following was a major cost associated with the efficient use of these automobiles?  
 (A) Road systems had to be expanded. (B) Cities had to be built farther apart. (C) Houses inside cities had to be built farther apart. (D) Vehicle choices available to consumers had to be expanded.
Output (English): A