  A search is presented for a heavy pseudoscalar boson A decaying to a Z boson
and a Higgs boson with mass of 125 GeV. In the final state considered, the
Higgs boson decays to a bottom quark and antiquark, and the Z boson decays
either into a pair of electrons, muons, or neutrinos. The analysis is performed
using a data sample corresponding to an integrated luminosity of 35.9 fb$^{-1}$
collected in 2016 by the CMS experiment at the LHC from proton-proton
collisions at a center-of-mass energy of 13 TeV. The data are found to be
consistent with the background expectations. Exclusion limits are set in the
context of two-Higgs-doublet models in the A boson mass range between 225 and
1000 GeV.
