Is d# to an Eb an augmented 2nd? I was told that it was, but isn't it the same exact note?

On an online quiz, I was told to find the interval. The staff was in treble clef and the key signature had 2 flats in it (key of Bb major- Bb and Eb). The notes given were D# and E . They wanted me to identify to interval between D# and Eb .
Isn't that the same note? How is that an interval? Any help?

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