What was the primary indicator that General Motors is trying to become a corporate sustainability leader, according to the case?

Multiple Choice

They announced a plan to become carbon neutral, meaning zero carbon emissions, by $2040.$

They ran a funny ad challenging Norway's EV leadership during a recent Super Bowl.

Many gas$-$powered GM vehicles will remain on the road for at least another decade.

They withdrew from the lawsuit challenging California's miles$-$per$-$gallon rules.