Select the correct indirect form of the given sentence.
Monika's mother said to her, "What were you doing at ten o’clock last night?"
1
Monika's mother asked her what she had been doing at ten o’clock the night before.
2
Monika's mother said to her what she had been doing at ten o’clock last night.
3
Monika's mother told her what she had been doing at ten o’clock last night.
4
Monika's mother said to her what she was doing at ten o’clock last night.