【多选题】

Which two visits of Halley’sComet can be inferred from the comet orbiting rules in the discussion

A、The visit of Halley’sComet was in 1956.
B、The visit of Halley’sComet will be in 2138.
C、The visit of Halley’sComet was in 1910.
D、The visit of Halley’sComet was in 2137.