It could be A-D.
This painting makes it difficult to determine if Napoleon is the kneeling or the one holding the crown.
The question states he is declaring himself so I assume, he's doing it in a arrogant way with too much pride.
If he is the one kneeling then he is showing that he is respectful to the person sitting and is honored.
For me, I probably would go with arrogant and pride because of the way the question says, "declaring himself emperor"
I hope this kind of gives you a better decision of what the answer could be
