Left: Average mass-to-light ratios (M/L) in the K-band as a function of redshift for the MHUDF sample split into two M_★ bins, the low-M_★ bin (yellow) and high-M_★ bin (orange), along with the evolution inferred for a sample of more than 5000 K-selected galaxies in Drory et al. (2004). The red star shows the M/L-K ratio adopted for the SPARC sample. Right: Impact of systematic disk mass offsets on the inferred a₀(z). The black points correspond to the fiducial fits shown in Fig 3. The blue points show the inferred a₀(z) assuming a global shift of +0.2 dex in the mass budget of the sample, while the green points show the same, but when assuming a global shift of +0.45 dex . The red star and dotted lines show the canonical a₀(z = 0) inferred for the SPARC sample.