Detailed 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".
Q: [header] How to case a window [title] Remove any existing trim. [step] If you're redoing a window that already has trim installed, you'll need to get rid of the old before you can put in the new. Use a utility knife to score the caulk lines around the edges of the window trim, including the top piece, sill, and apron. <sep> (A) Coat all the exposed sides of the trim with caulk. [substeps] If possible, take the trim to your local hardware store to have it shaved off, rather than having it hidden behind plastic trim. (B) Stop at the bottom of the window trim, which is usually just slightly below the edge of the glass surface. Test the trim by cutting straight across and then gently pulling back on your knife or toothpick to reinstall it. (C) [title] Get rid of the trim with duct tape. [step] Start with the caulk lines closest to the window. (D) Then, pry up the old casing with a crowbar or the claw end of a hammer. [substeps] Cut and pry carefully to avoid damaging the window jambs or any part of the surrounding wall.
A:
D