Which Statement Is True of the Kingdoms That Emerged from the Breakup

Which statement is true of the kingdoms that emerged from the breakup of Alexander's empire?

A) The Antigonid Kingdom controlled the entire Greek mainland.
B) The Seleucids in Persia failed mainly because their kingdom was too small and poor.
C) The Antigonids controlled the richest of the three kingdoms.
D) Thousands of Greeks who immigrated to the Ptolemaic Kingdom intermixed with Egyptian upper class.
E) All three kingdoms lasted until the arrival of the Roman in the fourth century B.C.E.