Which Thai classical composer, a National Artist, revolutionised the piphat ensemble in the early 20th century?

• A Montri Tramote
• B Luang Pradit Phairoh ✓
• C Phra Chen Duriyang
• D Boonrawd Chaiyakam

Luang Pradit Phairoh (Sorn Silapabanleng, 1881-1954) was the most influential Thai classical musician of the modern era, serving as Royal Musician and codifying the ranat ek repertoire.