Write the next sentence in this paragraph:

Two of the body builders arm wrestle on a table while another person is watching them. After he signals the body builders to start, they begin arm wrestling. both the body builders

Choose from: (1). and the person with the spare arm are arm wrestling in the room with all the other body builders. (2). and the man in the red hoodie are laughing, then they move towards each other and wrestle before they pin each other down on a table. (3). let straps go from the object and readjust it. (4). use all their force and concentration while they try to take the opponent down.
(4).