A 30-year-old patient develops fever, rash, and joint pain approximately 7-10 days after receiving a new antibiotic. Laboratory tests reveal circulating immune complexes and complement activation. This clinical presentation is most consistent with which type of hypersensitivity reaction?
✓ Correct Answer: Option C
Type III hypersensitivity reactions, like serum sickness, involve the formation of immune complexes that deposit in tissues, activating complement and causing inflammation, leading to symptoms such as fever, rash, and arthralgias.