this is my question

If time, (, is in hours and concentration, ( is in no/ml, the drug concentration curve for a drug is given by C = 12Are-92 (a) Select the correct graph of this curve. 10 20 O 30T 30 10 20 30T 20 eTextbook and Media (b) How many hours does it take for the drug to reach its peak concentration? What is the concentration at that time? Round your answer for the concentration to one decimal place. The concentration reaches its peak after hours and the concentration is ng/ml. e Textbook and Media Hint (c) If the minimum effective concentration is 9 ng/ml, during what time period is the drug effective? Round your answers to the nearest hour. The drug is effective for SIS 1 hours. eTextbook and Media Hint (d) Complications can arise whenever the level of the drug is above $ng/ml. How long must a patient wait before being safe from complications? Round your answer to the nearest hour. A patient is safe from complications after hours. eTextbook and Media Hint