Distribution of A(C), as a function of [Fe/H], of the known (and likely) binaries and known (and likely) single stars in our compiled sample of CEMP stars. As before, the blue and red colors indicate the CEMP-s/rs and CEMP-no stars, respectively. The dots (·) represent the known/likely single stars; the small dots inside the larger open circles (☉) represent the known/likely binary stars. The dotted black lines indicate the location of the two A(C) peaks described in the text. The dashed black line is a fiducial at A(C) = 7.1, placed at the midpoint of the peaks in the marginal histograms of A(C) shown in Figure 1; see the text for further discussion.