Which statement correctly describes relations between athens and sparta leading up to the peloponnesian war?

sparta was a strong ally of athens because the two city-states had similar forms of government.
sparta was a strong ally of athens because the two city-states were both military societies.
sparta resented the growing power of athens, which controlled the city-states of the delian league.
sparta resented the growing power of athens, which had fought the city-states of the delian league.