选择篇(017)-哪个选项是不正确的?

const bird = { size: 'small' }const mouse = { name: 'Mickey', small: true }

【选择篇(017)-哪个选项是不正确的?】A: mouse.bird.size
B: mouse[bird.size]
C: mouse[bird["size"]]
D: All of them are valid
参考答案:

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