Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to do the cat pose in yoga [title] Start on your hands and knees. [step] The starting position for cat pose is also called " tabletop pose. " get on all fours with your wrists directly below your shoulders and your knees directly below your hips.

Ending1: While your body forms a straight line on the floor, your wrists should be held tight against your palms and your shoulders should be pulled back. [substeps] " tabletop pose " is the fourth pose from startup. Ending2: Lay down a yoga mat to lessen the stress on your knees and wrists. [substeps] Your back should be flat and neutral. Ending3: [substeps] Put your hands over your head and lock your knees together at the bottom of your back. Keep your shoulders back and move your hips forward so that your back is straighter than your hips. Ending4: Your chest and buttocks should be placed parallel to the floor. [substeps] Spread your feet apart, but leave about 0.5 in (1.3 cm) of space between your heels and the floor.

Answer format: ending1/ending2/ending3/ending4