Task: Question Answering
Input (English): Question: Two trains start from P and Q respectively and travel towards each other at a speed of 50 km/hr and 40 km/hr respectively. By the time they meet, the first train has traveled 100 km more than the second. The distance between P and Q is?

 Option A: 900 km

 Option B: 300 km

 Option C: 700 km

 Option D: 800 km

 Option E: 100 km
Output (English): Option A