45. Which of the following statements is true? (A) Norway set a national goal that by 2025 all new car sales should be ZEVs. (B) Exemptions from import duties are the most effective policy. (C) More countries allow plug-in vehicles to use bus lanes and high-occupancy vehicle lanes than offer free parking and free charging. (D) Some economists have concerns that the current policies may not be enough to promote electric car use.