Task: Question Answering
Input (English): Question: Sarah is driving to the airport. After driving at 50 miles per hour for one hour, she realizes that if she continues at that same average rate she will be an hour late for her flight. She then travels 100 miles per hour for the rest of the trip, and arrives 30 minutes before her flight departs. How many miles did she drive in all?

 Option A: 140

 Option B: 175

 Option C: 200

 Option D: 245

 Option E: 280
Output (English): Option C