JS Quiz: Hard: Generator consumption order puzzle

[Yoshiii]

What is logged?

function* g() {
  yield 1;
  yield 2;
  return 3;
}
const it = g();
const a = [...it];
const b = it.next();
console.log(a.join(','), b.value, b.done);

• 1,2,3 3 true
• 1,2 undefined true
• 1,2 3 false
• 1,2 undefined false