Which early 1960s painting by David Hockney, depicting a Los Angeles swimming pool, sold at auction for over $90 million in 2018?

• A A Bigger Splash
• B Portrait of an Artist (Pool with Two Figures) ✓
• C Peter Getting Out of Nick's Pool
• D Sunbather

Portrait of an Artist (Pool with Two Figures) was painted in 1972 and sold for $90.3 million at Christie's in 2018, making Hockney the most expensive living artist at the time.