Which option explains why an environmental group is interested in the project in the following scenario? An environmental group is partnering with a team of chemical engineers to develop oil for machines that will increase their efficiency while decreasing the usage of fuel.

Decreasing fuel usage leads to a reduction in carbon emissions, which is a significant "green" issue.

Environmentalists like to see increased power in machines to cut down on the amount of waste production.

Decreased fuel costs will allow the group to have more money to focus on their issues.

Sustainable machines are the primary goal of environmentalists.