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". 

The boy watches his mom vacuum as he jumps on the bed. The boy then lays down on the bed as he sees his mother finish the job. then the boy <sep> (A) shows his stomach as she vacuums the bed. (B) plays the accordion and pans the camera to his dad playing the accorion. (C) plays with some toys and walk down a street as he looks at a lot of houses. (D) gets off the bed and jumps down to the ground to look under the bedside table.
D

[header] How to reduce fat in your cooking [title] Use broth in place of butter or oil in dishes like mashed potatoes, stir-fry or meat marinades. [title] Substitute applesauce or pureed prunes for butter or oil in baked goods such as cakes, cookies and pastries. [step] Use the same amount called for in the recipe. <sep> (A) Keep in mind your needs vary from recipe to recipe. [title] Try to reduce the number of butter or oil you add into your recipe. (B) [title] Replace cream in recipes with plain yogurt. [step] Yogurt can also be used in place of sour cream on a baked potato or in mexican dishes. (C) Too much fat may cause your cookies and pastries to cook unevenly and cause a hollow cavity or gap in the crust. [substeps] For example, use a bit of ground turkey instead of water in a pasta sauté pan. (D) [title] Moisturize your skin when cooking. [step] Peeling and flaking your skin is an easy way to boost your immune system.
B

[header] How to clean ivory [title] Dust ivory using a paintbrush. [step] Start off cleaning your ivory by brushing with a paintbrush, which is the most delicate method. Be sure to use a soft, clean paintbrush, and to work in one direction so that you don't spread dirt or impurities around the surface of the object. <sep> (A) [substeps] For a stubborn mess, spread powdered sugar on a cotton rag. [title] After dusting and swiping down the ivory, buff the item, about 2-3 times. (B) [substeps] Make sure that you brush in the direction of the grain. Oil that you use on ivory creates thin cracks, and dirt will quickly accumulate on the surface, which can make the surface more dirty and lead to more blemishes. (C) [substeps] Before handling ivory, wear clean, white cloth gloves. Without gloves, the oil from your fingers can transfer to the ivory and affect its coloring. (D) [substeps] A medium to high-grit hand duster is always the most effective from here. Start at the lower end of the ivory, focusing on the thinnest point of the object.

C