Carlos Naturals makes bulk quantities of cleaning fluids. The company currently sells 1,000 containers a month at a price of $22 per unit. The addition of a new disinfectant can fetch them $25 per unit for the improved product. It would cost them a total of $3,800 per month to make that alteration. What would be the effect on operating income?

		It would increase by $400.
		It would decline by $800.
		It would increase by $3,000.
		It would decline by $1,200.