Selta is a middle sized automobile company, which is currently spending a lot in developing an environment friendly variation of its existing vehicle that runs on diesel. However, the market now needs electric vehicles, which are more environmentally friendly than diesel vehicles, and hence the profit margin from selling electric vehicles is much higher than that from selling diesel vehicles.
Which of the following options, if true, gives an economic explanation for Selta's investments in the less profitable vehicle of the two mentioned in the passage above?
A. Electric vehicles are not as environmentally friendly as generally thought, because they are charged by sources that burn diesel to generate electricity.
B. Selta’s management is led by people who are not very concerned about developing environmentally friendly technologies.
C. The R&D team in Selta has a thorough knowledge in development of diesel engines.
D. Electric vehicles are practically maintenance free, whereas diesel vehicles need periodic maintenance including replacement of costly spare parts.
E. The diesel vehicles can also incorporate the safety features typically available in electrical vehicles.