In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to prevent greasy hair [title] Shampoo properly. [step] Apply a small, quarter-sized amount of shampoo to your scalp and massage vigorously with your fingertips. Then, work the lather through your hair and rinse. <sep> (A) [title] Rub a dime-sized amount of baby oil in your palm. [step] Squirt a dime-sized amount of all-purpose baby oil into your palm and then use the back of a spoon to massage the lather into your hair. (B) Body wash will also work well to loosen the oil from your hair and prevent it from slacking off. Comb your fingers through your hair to ensure that all areas of your hair are clean. (C) [substeps] Whether you have wet or dry hair, lather the lather gently and never hold it in place for more than one second. [title] Consider bed-wetting your hair as often as you can. (D) Rinse hair thoroughly so no shampoo is left behind. Washing your hair should take about five minutes.
D

[header] How to bathe a pregnant guinea pig [title] Select a shampoo. [step] There are all types of shampoos for pets. For your guinea pig, make sure the shampoo is made specifically for small animals (it should say so on the bottle). <sep> (A) Otc shampoos and chemical shampoos are good choices. Avoid shampoo labeled specifically for guinea pigs and those formulated for females. (B) This way, both animals can use the shampoo and their fur will be clean. While many shampoos claim to free your guinea pig from " reye's syndrome ", this actually isn't true. (C) [substeps] Make sure that it is specially formulated for pregnancy-therefore not designed for your guinea pig. You can get shampoo from the veterinarian. (D) A small animal-specific shampoo will keep your guinea pig's skin from drying out or becoming irritated. Since your guinea pig is pregnant, the shampoo should also be non-medicated to prevent ingredients absorbing through her skin that could harm her unborn babies.
D

[header] How to make a jean jacket look worn [title] Use a sanding tool on the seam. [step] Insert 220-grit sandpaper into a handheld sanding tool and gently apply the tool to all of the seams on your jean jacket. Use long swipes in order to gently distress the denim and avoid damaging the fabric. <sep> (A) [substeps] It's okay to hold the sandpaper in your hand if you don't have a sanding tool. Sanding tools can be bought at a home improvement store. (B) [substeps] You can purchase pre-sanded sandpaper at most craft stores and online. Repeat this process with each piece of denim clothing to ensure that the entire jacket is smooth and free of dust. (C) [title] Choose a solid color for the jacket's distressed look. [step] Solid color jackets are not recommended if you're looking for a distressed color, especially pale denim coats. (D) Wipe away the sanding dust as you go. [substeps] If your jean jacket has a steep, bumpy seam where it is even with your jeans, an electric sander can help remove this seam.
A