Write the next sentence in the following story.

How to run a 5 minute mile
Develop a training schedule.
You'll never beat a five minute mile without a plan and proper schedule. For the best results, you should be training almost every day, incorporating different exercises.

OPTIONS:
(a). The first three days of training should be moderately challenging, while the break time should be between 1 am and 1 pm in between. There are no set goals for this run..
(b). This will look great on your record as a coach by letting your kids experience some variety of exercise. There are a lot of forms to choose from when it comes to running long distances..
(c). Start your week with a distance run, running for at least 40 minutes or about 3 miles, and gradually increasing that as you train. Take the next day to rest or do some other training like yoga or weight lifting..
(d). Your training schedule should be based on your routine. If you're responsible enough to plan your training, then you'll have ample time to adequately exercise and meditate... The answer should be
(c).