Carlos Naturals Manufactures Bulk Quantities of Cleaning Fluids

Carlos Naturals manufactures bulk quantities of cleaning fluids.The company currently sells 900 containers a month at a sales price of $26 per unit.The addition of a new disinfectant will result in a sales price of $28 per unit for the improved product.It would cost a total of $4,200 per month to make the alteration.Operating income would ________.

A) decline by $23,400
B) increase by $4,200
C) increase by $2,400
D) decline by $2,400