A 20-year-old woman presents with malar rash, arthralgias, low-grade fever, and high-titer antibodies to double-stranded DNA and to the Sm (Smith) antigen. Which of the following forms of hypersensitivity is the primary mechanism of the abnormalities found in this disorder?
A. Type I (immediate or anaphylactic) hypersensitivity
B. Type II (antibody-mediated or cytotoxic) hypersensitivity
C. Type III (immune complex-mediated disorders) hypersensitivity
D. Type IV (cell-mediated) hypersensitivity