Please choose the correct ending to complete the given sentence: Building sandcastles: A boy talks to the camera at a beach. A man walks from right to left in the background. the boy

Ending1: talks to the camera again from the left side of the camera. Ending2: is shown riding a surfboard while pointing out its points and tricks. Ending3: points at the camera then back to the camera. Ending4: interacts with a man in front of a sand castle.

Answer format: ending1/ending2/ending3/ending4