Write the next sentence in the following story.

How to refinish bathtubs
Clean the entire surface of the bathtub with chemical cleaners to remove any soap scum and dirt residue.
The chemical cleaners will also help the bonding agent adhere to the surface.
Rinse and dry all surfaces thoroughly.

Possible answers:
(1). Use a palm sander to gently roughen the surfaces you plan to refinish to make it easier for the paint to bond with the surface. Tape paper or plastic over any surfaces you do not want to paint..
(2). Remove tub counter tops with an acrylic acid based cleaner with a small brush or the brush or spatula. Remove mold, insects, and wax from the tub..
(3). Run a vapor bath if needed to remove soap scum or dirt residue from the bathtub. Detach the tub frame by jacking the top part of it upwards and slamming it against the side and wall..
(4). Identify and avoid leaking faucets or shower heads, such as those with a drain. Remove the line attaching a shower drain to the faucet... The answer should be
(1).