please give me how to do answer this question. not only the option. thank you

Amerio Corporation's vice president in charge of marketing believes that every 8% decrease in the selling price of one of the company's products would lead to a 26% increase in the product's total unit sales. The product's absorption costing unit product cost is $18.20. The variable production cost is $1.90 per unit and the variable selling and administrative cost is $2.30 per unit. 4. The product's price elasticity of demand as defined in the text is closest to: A) -2.82 B) -4.41 C) -2.00 D) -1.79 5. The product's profit-maximizing price according to the formula in the text is closest to: A) $33.77 B) $3.60 $2.97 D) $6.57 C)