[单选题]
The parallax angles o fembn4.a69dn 2)to6 g*nqjkpf Star A9 /nbx5sobiz::inltwy -lq76 and Star B are 0.250 arcseconds and 0.500 arcseconds respectively. What is the shortest possible distance, in parsec, between Star A and Star B?7nbsbi 6:t: z9l/li wqxn-o y5
