This question: 1 point(s) possible The drug concentration in the bloodstream t hours after injection is given approximately by C-4.950sts5, where C) is the concentration in milligrams per militer. (A) What is the rate of change of concentration after 3 hours? After 5 hours? (B) Graph C. (A) Select the correct choice below and fill in the answer box to complete your choice (Type an integer or a decimal. Do not round until the final answer. Then round to the nearest hundredth as needed) COA. After 3 hours, the concentration is increasing at the rate of OB. After 3 hours, the concentration is decreasing at the rate of OC. After 3 hours, the rate is neither increasing nor decreasing mg/ml per hour mainl. per hour. Select the correct choice below and fill in the answer box to complete your choice (Type an integer or a decimal. Do not round until the final answer. Then round to the nearest hundredth as needed.) OA. After 5 hours, the concentration is increasing at the rate of OB. After 5 hours, the concentration is decreasing at the rate of OC. After 5 hours, the rate is neither increasing nor decreasing (B) Graph the function C 4.95" Choose the correct graph below OA 700 mg/ml per hour mg/ml per hour OB AC OD. 7.00 100 000 800 000