Which 20th-century Orthodox bishop-surgeon, canonised in 2000, wrote theological works while practising medicine and is venerated as Saint Luke of Simferopol?

• A Seraphim of Sarov
• B John of Kronstadt
• C Valentin Voyno-Yasenetsky ✓
• D Tikhon of Moscow

Archbishop Luka (Valentin Voyno-Yasenetsky) was a pioneering surgeon who developed techniques for treating purulent infections and was awarded the Stalin Prize while serving as a bishop under persecution.