Task: Question Answering
Input (English): The great Mayan king Pacal built temples in the city of Palenque in order to:
(A)satisfy the powerful Mayan astronomer priests. (B)display his generosity to the common people, since they were allowed to live in the temples. (C)frighten away enemies, in particular the Spaniards. (D)legitimize his kingship, since his father was not royal.
Output (English): D