The two statements which express how Mackaye's play transforms the original source are:
Based on the complete texts, we can see that there is the inclusion of the play by Mackaye and how it was transformed b ase on the original source to a novel.
With this in mind, we can see that the main difference between the play and novel is that the play has a darker mood, while the novel has a more uplifting mood.
Therefore, the correct answers are options B and D
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