Answer :
B And D. I would think A over B but I can't really explain but B too becuz the disease plague did kill thousands of Athens men. But I'd choose A more only becuz in high school u learn more about that Sparta and Athens war. And it explains all of the Xerxes Persian war. And Xerxes did defeat them in that too. . because Sparta did end up defeating them in the Peloponnesian War Since Athens lost most of their men they became weak and Sparta had gained power to defeat Athens. So A and D