Instructions: 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".
Input: [header] How to clean a microwave with baking soda [title] Remove the turntable and support ring, and sprinkle baking soda. [step] Set these pieces aside, on the kitchen counter or in the sink. Sprinkle the baking soda across the bottom of the microwave. <sep> (A) The baking soda will act as a natural abrasive agent and dislodge a stuck-on debris. [title] Clean your microwave with water, a note-taking oil, and dish detergent. (B) Remove the screws holding these pieces together. Reattach the microwave in the same fashion you removed it. (C) [substeps] Alternatively, you can use a baking soda paste to clean your microwave. Mix two parts baking soda to one part water and use a butter knife to apply the paste to the inside of the microwave. (D) [substeps] You will need a strong oven mitt to do this. [title] Place 1 cup (114 g) white vinegar (softened) in the microwave.
Output:
C