At what time will the train reach city X from city Y? I. The train crosses another train of equal length of 200 metres and running in opposite directions in 15 seconds. II. The train leaves city Y at 7.15 a.m. for city X situated at a distance of 558 km. III. The 200 metres long train crosses a signal pole in 10 seconds.

• I. The train crosses another train of equal length of 200 metres and running in opposite directions in 15 seconds.
• II. The train leaves city Y at 7.15 a.m. for city X situated at a distance of 558 km.
• III. The 200 metres long train crosses a signal pole in 10 seconds.
• A. I only
• B. II only
• C. III only
• D. II and III only
• E. All I, II and III are required.