A 19-Year-Old Patient Hospitalized with a Fever and Red,hot,and Painful

A 19-year-old patient hospitalized with a fever and red,hot,and painful knees is suspected of having septic arthritis.Information obtained during the nursing history that indicates a risk factor for septic arthritis is that the patient

A) had several knee injuries as a teenager.
B) recently returned from South America.
C) is sexually active with multiple partners.
D) has a parent who has rheumatoid arthritis.