Please answer the following question: Question: I bought some smooth plastic furniture movers which let me push heavy furniture across my carpet on my own. I got tired of asking for help to rearrange the furniture, as before I bought these I couldn't do it alone. This was because the furniture movers (A) increased friction or (B) decreased friction?  Do not use A and B to answer the question but instead, choose between "furniture movers on carpet" and  "furniture on carpet".
Answer:
furniture on carpet