A 28-year-old woman presents with a history of fatigue, joint pain, and a rash on her face that worsens with sun exposure. She also reports hair loss and mouth ulcers. On physical examination, a malar rash is noted. After laboratory investigations, she has been diagnosed with mild systemic lupus erythematosus? Which of the following is considered a first-line medication for managing mild systemic lupus erythematosus?
