Which statement best describes the most important complication when treating tb in an hiv-positive patient? 1. there are potential complications because the hiv positive patient cannot tolerate extended antibiotic therapy.2. hiv makes it difficult to diagnose tb so complications arise from a delay in treatment.3. it is complicated to treat a co-infection of hiv and tb because there are often drug reactions between the drugs used to treat each infection. 4. hiv weakens the immune system, which makes tb more difficult to overcome.