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". 
Problem:The lady puts a paste on a window glass. The lady use a rug to wipe off the paste on the window. the lady <sep> (A) puts a pigment on the mirror. (B) uses a clean rug to wipe over the window again. (C) uses carpet cleaner on a chair. (D) wipe some powdered sugar onto a box and rub it on the window.
Solution:
B