Please choose the correct ending to complete the given sentence: Playing rubik cube: A group of boys are seated at tables. They are trying to solve rubik's cubes puzzles. they

Ending1: finish with a final solution. Ending2: do this for blocks, pushing and prying them to the sides. Ending3: wait intently, trying to solve every single puzzle. Ending4: are being timed as they complete the puzzles.

Answer format: ending1/ending2/ending3/ending4