Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to hit a flick serve in badminton [title] Know when to use the flick serve. [step] The flick serve is best used when your opponent is rushing you and you're under pressure. It works especially well in doubles games.

Ending1: [substeps] If your opponent rushes, uses a flick serve to parry their feints. You should follow follow through with pull fulls. Ending2: It gives you the ability to quickly power through your opponent, boxing in between them in order to score so you can hit them hard. It also releases more force for accuracy and play the fly ball better. Ending3: With a flick serve you'll ball forward with your body weight going forward and be able to return a pop serve, but with a flick serve, your opponent can't find you. Swipe serve: most hits are made with a flick serve, with slightly higher spin and upswing. Ending4: However, keep in mind that a flick serve can leave you vulnerable if your opponent can tell that it's coming. That's why it's best to use it only occasionally.

Answer format: ending1/ending2/ending3/ending4