Please choose the correct ending to complete the given sentence: Fixing the roof: An introduction comes onto the screen for a video about home repair. two men on a roof

Ending1: are trying to fix a leak in a pipe located on top of the roof. Ending2: are using roofing materials to move tiles to the side of the roof using a steel plate and peser machine. Ending3: are preparing to put on some roof well dger-letch roofing beams, and the contractor reminds them that they're doing it outside on the yard roof. Ending4: are shown in a company garage, working to repair and replace old roof tiles.

Answer format: ending1/ending2/ending3/ending4