【js】下面代码输出什么？

[misty0304]

function Person(firstName, lastName) {
  this.firstName = firstName;
  this.lastName = lastName;
}

const member = new Person("Lydia", "Hallie");
Person.getFullName = function () {
  return `${this.firstName} ${this.lastName}`;
}

console.log(member.getFullName());

• A: TypeError
• B: SyntaxError
• C: Lydia Hallie
• D: undefined undefined

[misty0304]

本题考的是实例和原构造函数不相关，故member下无getFullName()，故选A