Task: Question Answering
Input (English): In which situation would it be an advantage to ship a product by plane rather than by truck?  
 (A) The product is very heavy and relatively large. (B) The product is sensitive to changes in pressure. (C) The product must be delivered a long distance soon after it is made. (D) The product must be delivered to several sites located within a radius of 50 miles.
Output (English): C