The Salesperson for the Kemco Hot Water/high Pressure Plant Sanitation

The salesperson for the Kemco hot water/high pressure plant sanitation system told the purchasing agent, "Our new system can save your company $60,000 annually in energy, chemicals, and water use compared to the type of sanitation system you're using now." At that point in his presentation, the salesperson was describing a:

A) discrimination.
B) distinction.
C) benefit.
D) feature.
E) highlight.