Suppose the concentration C(t), in mg/ml, of a drug in the bloodstream t minutes after an injection is given by 
Find the maximum concentration and when it occurs.
?
A. Maximum concentration of 14.72 mg/ml occurs after 2.00 minutes.
B. Maximum concentration of 7.79 mg/ml occurs after 0.50 minutes.
C. Maximum concentration of 1.35 mg/ml occurs after 10.00minutes.
D. Maximum concentration of 14.46 mg/ml occurs after 2.40 minutes.
E. Maximum concentration of 13.81 mg/ml occurs after 2.80 minutes.
Answer: A
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