Multi-choice problem: Continue writing the next sentence in this paragraph:

How to climb steep hills while cycling
Prepare yourself mentally.
If you've cycled a hill before, you'll already know that it hurts physically and takes a lot of effort. If you've long been the sort to hop off the bike and walk it up the hill, you'll need a little mental prepping first!
Accept that riding uphill is more effort.

Pick from: (A). Once you begin to grow used to it, you'll be ready to loosen up a little from the uphill side. Head for your " last stop " to find a good way to go.; (B). You may get in an accident and it might take a day to get past. But you've got to be able to climb on and down rocks, and you'll be far more likely to succeed.; (C). Once you stop fighting it mentally, you can spend more time motivating your body and learning how to make the ride easier on you. Get excited about the challenge of making it to the top of the hill.; (D). The more days you work this out, the less effort you'll take. Talk to your doctor about what you can do first-the more exercises you can do alone, the more effort you'll take.;
(C).