Two trains X and Y start from Jodhpur to Jaipur and from jaipur to Jodhpur, respectively. After passing each other they take 4 h 48 min. and 3 h 20 min. to reach Jaipur and Jodhpur, respectively. If X is moving at 45 km/h, the speed of Y is:

• A. 60 km/h
• B. 58 km/h
• C. 54 km/h
• D. 64.8 km/h