Write the next sentence in the following story.

How to do commando sit ups
Have your partner get down on their hands and knees.
Their back should be kept rigid and parallel to the ground.
Sit on your partners back.

Choose your answer from: -It's okay if you can't reach them from where you are sitting at first. Position as best you can on a flat surface.. -Your legs should be dangling off their shoulders. Have your partner hold your feet tightly to the ground.. -Your hands should be under your partner's shoulders. Bring your knees up to your chest, until they're almost touching each other.. -The position is a little more similar to where you sit into a chair; your feet shouldn't be touching the floor. Get on all fours with your legs tucked... The answer should be
Your legs should be dangling off their shoulders. Have your partner hold your feet tightly to the ground.