Which Thai writer and activist, pen name Siburapha, authored the influential novel Behind the Painting?

• A MR Kukrit Pramoj
• B Chart Korbjitti
• C Kulap Saipradit ✓
• D Prabda Yoon

Kulap Saipradit (Siburapha) was a pioneering realist novelist whose Behind the Painting (Khang Lang Phap) is a classic romance about a Japanese-educated Thai man and an aristocrat's wife.