The prophet Obadiah delivers a strong message against Edom. What specific act of Edom's, during Judah's distress, provokes God's judgment according to Obadiah's prophecy?

A Edom's alliance with Babylon against Judah. B Edom's refusal to sell food to Judah during a famine. C Edom's rejoicing and plundering of Judah after its fall. D Edom's persecution of Jewish refugees seeking asylum.