What is the name of the large standing drum, imported from Java, originally used in royal processions and now in piphat mon?

• A Taphon
• B Klong that
• C Klong khaek ✓
• D Rammana

Klong khaek is a pair of barrel drums played with the hands, originally from Java/Malay traditions, now commonly used in Thai funeral music and the piphat mon ensemble.