A company produces 1,000 packages of cat food per month. The sales price is $4.00 per pack. Variable cost is $1.50 per unit, and fixed costs are $1,800.00 per month. Management is considering adding a vitamin supplement to improve the value of the product. The variable cost will increase from $1.50 to $1.90 per unit, and fixed costs will increase by 10%. The company will price the new product at $6.00 per pack. How will this affect operating income?

A. Operating income will remain unchanged.

B. Operating income will increase by $1,420.00 per month.

C. Operating income will decrease by $1,420.00 per month.

D. Operating income will decrease by $80.00 per month.