A 29-year-old man presents to his primary care physician complaining of dysuria, urgency, and painful ejaculation.. Physical examination reveals a tender prostate. The patient is given a prescription of sulfamethoxazole to be taken daily (q 12 h) for 30 days. The half-life is 12 h. How long will it take for the medication to reach 90% of its final steady state level? 47 a.40 hb.50 hc.10 hd.30 he.20 h