关于javascript:选择篇022下面代码的输出是什么

function Person(firstName, lastName) {  this.firstName = firstName  this.lastName = lastName}const lydia = new Person('Lydia', 'Hallie')const sarah = Person('Sarah', 'Smith')console.log(lydia)console.log(sarah)

A: Person {firstName: “Lydia”, lastName: “Hallie”} and undefined
B: Person {firstName: “Lydia”, lastName: “Hallie”} and Person {firstName: “Sarah”, lastName: “Smith”}
C: Person {firstName: “Lydia”, lastName: “Hallie”} and {}
D:Person {firstName: “Lydia”, lastName: “Hallie”} and ReferenceError

参考答案：