[单选题]
The parallax angles of prj65e .iqw9r ,y/fh yStar A and Star B are t-hlt 2z60n4a(2yhqctl 0wu :donku q gq0l 7(0.250 arcseconds and 0.500 arcseconds respectively. What is the shortest possible distance, in pud60qhh lut2q: 72tl cq tkwz (al0-on0gny(4arsec, between Star A and Star B?