The correct answers are A and B.
A --- Dario I promoted construction projects both in Persia's main territory and the conquered territories, especially in Susa, Pasargada, Persepolis, Babylon and Egypt.
B --- Satrap is the name given to the governors of the provinces of the ancient Median and Persian empires, including the Achaemenid dynasty and several of its heirs, such as the Sassanid Empire and the Hellenistic empires.