Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to throw a great two seam fastball [title] Place your index finger and middle finger on the seams. [step] Find the part of the seams where the gap between them is narrowest. Lay each finger so it runs parallel with one of the seams.

Ending1: [title] Using your thumb, apply pressure to pull them apart. [step] Continue to pull them apart until they are not touching, for okay. Ending2: [title] Alternate with the other two seams. [step] Keep alternating between both seams to get the ball where you want it to be. Ending3: The horseshoe shape of the seams should be opened upward. [substeps] Experiment with your fingers resting just inside the seams as opposed to directly on top of them. Ending4: The seam should be about level with the rest of the seams. [substeps] Use your thumb to create a small pocket.

Answer format: ending1/ending2/ending3/ending4