A 38-year-old woman, who was diagnosed with systemic lupus erythematosus (SLE) 3 years ago, comes to her physician with a complaint of facial swelling and decreased urination that she first noticed 2 weeks ago. She currently takes azathioprine and a corticosteroid. Her vital signs show blood pressure - 150/90 mm Hg, pulse - 91/min., temperature - 36.8°С and respiratory rate - 15/min. On physical examination, the doctor notices erythematous rash on her face exhibiting a butterfly pattern. The laboratory studies reveal hypercholesterolemia, hypertriglyceridemia and proteinuria. Which of the following is the most likely mechanism of SLE’s complication in this patient?

• A. Decrease in renal blood flow (ischemic nephropathy)
• B. Acute infection of the kidney
• C. Immune complex-mediated glomerular disease
• D. Increased plasma oncotic pressure