单选题

下面代码执行后的输出结果为（）？<script>constst...

Question

下面代码执行后的输出结果为（      ）？
<script>
    const student = {name: 'ZhangSan'}
    Object.defineProperty(student, 'age', {value: 22})
    console.log(student)
    console.log(Object.keys(student))
</script>

A. {name: 'ZhangSan'}
['name','age']

B. {name: 'ZhangSan',age: 22}
['name']

C. {name: 'cb'}
['name','age']

D. {name: 'ZhangSan'}
['age']