You will be given a topic and an argument. Decide the argument's stance towards that topic. The argument's stance is in favor or against the topic. If the argument supports that topic, answer with "in favor"; otherwise, if the argument opposes the topic, answer with "against".

topic: Hydrogen vehicles
argument: Electric car battery technology and costs are improving rapidly
against
The paragraph talks about the benefits of electric cars, but it does not directly say that electric cars are better than hydrogen vehicles. Therefore, the answer is "against"..