C-05-Q070mediumsingle_mcqThe solutions of the system in the previous question are —a(±9, ±3)(\pm 9,\ \pm 3)(±9, ±3)b(±3, ±9)(\pm 3,\ \pm 9)(±3, ±9)c(±6, ±3)(\pm 6,\ \pm 3)(±6, ±3)d(±9, ±6)(\pm 9,\ \pm 6)(±9, ±6)