What Did the IAU Establish in 1928

Multiple Choice

What did the IAU establish in 1928?

A) The IAU classified Pluto as a dwarf planet.
B) The IAU published official names of all constellations.
C) The IAU recorded 88 constellations with defined boundaries.
D) The IAU recognized additional orbiting bodies in the Kuiper Belt.
E) The IAU recorded all the mythologies associated with 88 constellations.