What type of trains are typically used to operate services on the Volme Valley Railway?

A. Trams with a maximum speed of 60 km/h
B. DB Class 648 (LINT 41) diesel railcars with a maximum speed of 120 km/h
C. Electric locomotives with a maximum speed of 160 km/h
D. Steam locomotives with a maximum speed of 80 km/h
Answer: 