Based on the context and the answer, generate a question. 

Context: I then asked Melissa to do the same and she confirmed that it was probably the milk . So we threw out all his made bottles , washed , and made new bottles from another formula box we had bought . Sam was happy and playful the rest of that evening , so we thought nothing more of it . He did what he had to do , and that was that .

Answer:

None of the above choices .



Why did we throw out what we threw out ?