Technician a Says That Diesel Fuel's Low Volatility Is Why

Technician A says that diesel fuel's low volatility is why so many diesel fuel pump islands appear to have a lot of spilled fuel. Technician B says that fuel spills at diesel pump islands are more common than those at gasoline pumps because truck drivers are careless when refueling. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B