In what category would the harp be placed, using non-Western instrument classifications?

Which of the following is a tryptych?

a. the Très Riches Heures b. The Martyrdom of Saint Apollonia c. Jan van Eyck's Studio d. the Mérode Altarpiece

Chubby Chucker wrote and performed "The Twist."

Answer the following statement true (T) or false (F)