Korean fusion eatery B/Bop/Q closed its doors last weekend after less than three years at Westfield Montgomery Mall. Owned by a Rockville-based food service company that had planned to turn B/Bop/Q into a chain, the restaurant had a loyal fan base but had trouble drawing crowds so far from the main Dining Terrace. Another nearby restaurant that opened around the same time, Shanghai Bao Kitchen, had similar issues and closed its doors last winter.