What was Athens's response to the Melians' insistence that they and their island remain neutral in the Peloponnesian War?
a. The Athenians killed all the men and enslaved the women and children.
b. The Athenians respected the Melians' neutrality.
c. The Athenians allowed the Spartans to destroy the island and its people.
d. The Athenians constructed a military base on the island but largely allowed the Melians to go about their affairs unharmed.