why there is no link to the students questions for this task??

class Student {
    constructor(gpa, credits){
        this.gpa = gpa;
        this.credits = credits;
    }

    stringGPA() {
        return this.gpa.toString();
    }

    get level() {
        if (this.credits > 90 ) {
            return 'Senior';
        } else if (this.credits > 60) {
            return 'Junior';
        } else if (this.credits > 30) {
            return 'Sophomore';
        } else {
            return 'Freshman';
        }
    }
  set major(major){
    const x = level();
    if(x === 'Junior' || x === 'Senior'){
      this _major =major;
    }else {
    this _major ='None';
    }


  }

}

var student = new Student(3.9, 60);