I think it is answer B. Sorry if it's wrong.
It's a metaphor.
To help you understand why, here's the definitions of both:
Simile: it's a <span>figure of speech involving the comparison of one thing with another thing of a different kind, it's used to make writing seem more vivid.
Metaphor: this is also a</span><span> figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.
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