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

How to protect your cherry trees from birds
Start when birds begin to show.
Keep track of bird sightings in your garden or orchard, either with a formal count or by intuition. Once the number of birds starts to grow, and the fruit shows the first hint of color, it's time to protect the trees.

Choose your answer from: i. Bird nests can be reached by building each tree directly on top of the other. Stop if you see bird nests from a distance or long distances, and keep hawks, caterpillars, insects, and sphagnum moss nearby to provide shelter from winter threat. ii. Watch birds provide loud and startling feeders and watch bird feeds that attract animals. Let your trees for harvest start two weeks before the fall of your maple tree. iii. Keep a good log in your garden or in your kitchen that you always log. Post it everywhere you go, keeping detailed records of any birds that spot their fruit cavers. iv. These scare tactics are very effective, but only last a few weeks. Starting too early may leave your trees vulnerable later, once the birds are used to your tactics.
iv.