Profit margin is net income divided by sales. Profit margin decreased to 12.5% in Year 3 from 12.9% in Year 2. Choose an option below: [Original text] The decrease in profit margin is the result of a decrease in sales in Year 3 and a decrease in total expenses. The decrease in profit margin is the result of a decrease in sales in Year 3 and an increase in total expenses. The decrease in profit margin is the result of an increase in sales in Year 3 and a decrease in total expenses. The decrease in profit margin is the result of an increase in sales in Year 3 and an increase in total expenses. The increase in profit margin is the result of a decrease in sales in Year 3 and a decrease in total expenses. RESET