Please choose the correct ending to complete the given sentence: Assembling bicycle: He rolls a big box into the room and proceeds to open a box where a bicycle sits inside. from the inside of the box

Ending1: , the man picks up a tire and brings it inside of the room. Ending2: , he takes a screwdriver and starts clipping the rim of the socket on the seat of the bicycle. Ending3: he removes a large pair of scissors and starts cutting the binding paper of the miniature bicycle. Ending4: , he takes out a small box full of tools for the use of assembling the bicycle.

Answer format: ending1/ending2/ending3/ending4