Critical Reasoning (CR) | Re: Proponents of the electric car maintain that when

Dear experts,
@GMATNinja; GMATNinjaTwo

I still find A not persuasive as the correct answer (even though I was able to eliminate all other choices). This option just doesn't sound logical to me. Below is my explanation. I'd appreciate if you could help me understand why A is the correct answer here.
According to the stimulus, the car proponents believe that the car "will result in an abatement of the environmental degradation caused by auto emissions". So we know that they believe that