Sales of 44s (vehicles in which the transmission is delivered through all four wheels) have slumped and existing owners face significant losses should they decide to sell. Environmental groups are happy to take responsibility for the change in fortunes and have campaigned vigorously against the vehicles. Government has suggested that drivers of the most polluting cars will be penalized with extra taxes. The high running cost was already starting to deter people from buying them. One of the reasons people opted to buy a 44 is their impressive passenger safety record.

Question: A basic assumption of the passage is that 44 vehicles are less fuel efficient than older large estates, saloons and people carriers.
Options:
A. true, B. false, C. uncertain
Answer: "B"