The correct option is B 800 km, 375 km/hr
Suresh travelled 1200 km by air which form (2/5) of his trip.
Then total distance of journey=52×1200=3000km
Suresh travelled 13of journey by car =13×3000=1000km
Then suresh travelled distance by train =3000-1200-1000=800 km
If whole journey by train in 8 hours
So speed of train=30008=375 km/Hr