A sentence has been given in Direct/Indirect Speech. Out of the four given alternatives, select the one which best expresses the same sentence in Indirect/Direct Speech.
The girls said, "we were walking 8 km each day to reach the campsite."1
The girls said that they had walked 8 km each day to reach the campsite.
2
The girls said that they had been walking 8 km each day to reach the campsite.
3
The girls said that they would be walking 8 km each day to reach the campsite.
4
The girls said that they were walked 8 km each day to reach the campsite.