Help Please!

Sunlight Design Corporation sells glass vases at a wholesale price of $4.00 per unit. The variable cost to manufacture is $1.75 per unit. The monthly fixed costs are $8,500. Its current sales are 30,000 units per month. If the company wants to increase its operating income by 30%, how many additional units must it sell? (Round any intermediate calculations to two decimal places and your final answer up to the nearest whole unit.) O A. 8,500 glass vases B. 120,000 glass vases O C. 37,867 glass vases D. 7,867 glass vases