Solve the Problem $$C ( t ) = \frac { t } { ( 0.542 t + 1.844 ) ^ { 2 } }$$

Multiple Choice

Solve the problem.
-The concentration C (arbitrary units) of a certain drug in a patient's bloodstream can be modeled using where t is the number of hours since a 500 milligram oral dose was administered. Using $$C ( t ) = \frac { t } { ( 0.542 t + 1.844 ) ^ { 2 } }$$ the TABLE feature of a graphing utility, find the time at which the concentration of the drug is greatest. Round
To the nearest tenth of an hour.

A) 4.9 hours
B) 4.2 hours
C) 5.7 hours
D) 3.4 hours