1.7.PS-16A company's stock began the day at $30.12 per share. That price drops by $1.59 each hour.a. What is the price per share after 4 hours?b. What will it be after 21 hours if this rate continues?c. Explain what the signs of the answers mean in this context.OA. The price per share after 4 hours is $23.51.OB. The price per share after 4 hours is $23.76.OC. The price per share after 4 hours is$3.77.OD. The price per share after 4 hours is$3.27.