Read the excerpt from the decree inscribed on the Rosetta Stone, which appears in The Riddle of the Rosetta Stone, by James Cross Giblin.

There being assembled the Chief Priests and Prophets and those who enter the inner shrine for the robing of the gods, and the Fan-bearers and the Sacred Scribes and all the other priests from the temples throughout the land who have come to meet the king at Memphis, for the feast of the assumption by PTOLEMY, THE EVER-LIVING, THE BELOVED OF PTAH, THE GOD EPIPHANES EUCHARISTOS, of the kingship in which he succeeded his father, they being assembled in the temple in Memphis on this day declared:

Which answer choice best describes the purpose of the excerpt?

to inform the reader about the Rosetta Stone’s history
to give instructions for the use of the decree
to explain the scene of the feast honoring Ptolemy
to persuade the reader that Ptolemy is a great king