Exercise v3.0

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Correct!

When generating elements with v-for, which specific attribute is always recommended to use?

<fish-type v-for="x in fish" :@(3)="x.id" :fish-name="x.name" :img-url="x.url" />

<fish-type v-for="x in fish" :key="x.id" :fish-name="x.name" :img-url="x.url" />

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