accounting

Cepeda sells custom COVID masks for $20 per mask. The variable cost is $3 per mask and fixed costs are $3000 per month. Current sales are 150 masks each month. Cepeda thinks that if they spend $150 in advertising, sales will increase by 50 masks each month. How will this impact operating income? O decrease of $700 O increase of $700 O decrease of $2150 increase of $2150