Write the next sentence in the following story.

How to write with a feather quill
Use a cushion.
Place a flat felt cushion under the paper. This will keep the quill nib sharper longer.

Choose from:
a). You can use fibers from old socks to hold the feather quill, or you can use other soft materials such as newspaper or paper towels. A leaf protector keeps water off the quill.;
b). Also, the padded side of the cushion will be cut out of the edge of the paper. You can fold your paper in half or in thirds as you're writing and flip the paper side up, then lay the quills side down.;
c). A quill pen can only be sharpened so many times before it becomes unusable. Pens that don't have to be sharpened as often will last longer.;
d). It will also help prevent scratching from paper or other hard surfaces that can damage the quill. For an efficient method, you can use an extra kitchen napkin, and have a cushion in stock so that you can also use the napkin.;. The answer should be
c).