单选题

以下Javascript代码执行后的输出结果依次是:() &...

Question

以下Javascript代码执行后的输出结果依次是:()
    ```javascript
    var tmp = {}
    var A = function() {}
    A.prototype = tmp

    var a = new A()
    A.prototype = {}

    var b = Object.create(tmp)
    b.constructor = A.constructor

    console.log(a instanceof A)
    console.log(b instanceof A)
    ```

A. true, false

B. false, true

C. true, true

D. false, false