Recall lab 6 where a drug is administered every few hours in regular dose sizes, neutralized at an exponential rate with a decay rate constant k hT-l. Not all of the drug is neutralized before the next dose is administered. Denote by A(t) the amount of drug in the patient's system at time t hours. . (1 mark) Specically, a drug is administered every 5 hours in doses of 5:03. The drug is neutralized at an exponential rate with a decay rate constant of k = 0.2 hr'l. The function A(t) on [10,15) is: a) (5 + 56(4)' + 56('1)2)e'-2("1) b) (5 + 531)eo.2(t5) c) 5602: + 5eD.2(t5) + 5eD.2(t10) d) 5 + 561 + 53260294\") e) 5(1 + e'1 + 6'2)e''2(*'19)