Select the option that expresses the given sentence in direct speech.
Priyanka asked her friend when she had booked the train tickets.
1
Priyanka said to her friend, “When you had book the train tickets?”
2
Priyanka said to her friend, “When do you book the train tickets?”
3
Priyanka said to her friend, “When are you booking the train tickets?”
4
Priyanka said to her friend, “When did you book the train tickets?”