Task: Question Answering
Input (English): Question: A farmer has enough food to feed her 1000 cows for 50 days. After 10 days some of the cows run away and the food was now enough for the same period of 50 days as before. How many cows ran away?

 Option A: 300

 Option B: 200

 Option C: 500

 Option D: 400

 Option E: 250
Output (English): Option B