Which traditional Malay bowed string instrument, with three strings and a body carved from a coconut shell covered with stretched skin, leads the melody in Mak Yong and wayang kulit ensembles?

• A Gambus
• B Sape
• C Seruling
• D Rebab ✓

The rebab's haunting, vocal-like tone is the melodic centre of traditional Kelantanese theatre; it is played vertically, resting on a spike, with a bow strung with coconut fibre drawn across silk or metal strings.