Select the correct active form of the given sentence.
While I was on an important business trip, my expensive car was stolen from the porch of the building.
1
While I was on an important business trip, somebody stole my expensive car from the porch of the building.
2
While I was on an important business trip, my expensive car had been stolen from the porch of the building.
3
While I was on an important business trip, they steal my expensive car from the porch of the building.
4
While I was on an important business trip, they had stolen my expensive car from the porch of the building.