Which of the following is an example of oxymoron

An example of an oxymoron is from the days he came, Danny has been the most devil angel, I have ever met. Thus, the correct answer is D.
A figure of speech that contains words that clearly violate each other is known as an oxymoron. Oxymorons are employed for a variety of objectives, just like other figures of speech.
Here, in sentence D they use the devil phrase for angel which shows completely opposite context. Therefore, the correct answer is D which clearly defines the oxymoron.
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