  van den Heuvel & Tauris argue that if the red giant star in the system 2MASS
J05215658+4359220 has a mass of 1 solar mass (M$_\odot$), then its unseen
companion could be a binary composed of two 0.9 M$_\odot$ stars, making a
triple system. We contend that the existing data are most consistent with a
giant of mass $3.2^{+1.0}_{-1.0}$ M$_\odot$, implying a black hole companion of
$3.3^{+2.8}_{-0.7}$ M$_\odot$.
