Highest-resolution (frequency 8.5 GHz, synthesized beam 031) VLA image from Fig. 12 in Choi et al. (2008). The tickmarks are spaced at 1′′ intervals, corresponding to 130 pc. The position of the source that we detect in the third epoch of our LBA observations is marked by a red star. We interpret the detection as a counterpart of IRS 5b since IRS 5a is more than twice as distant. This conclusion is further strengthened when the effects of proper motion are considered.