Three light switching (not three way)
As @jsotola pointed out in the comments, &quot;B + C together and not C&quot; does not make sense. Your question also does not define what happens when both switches are on.
If what you want is:
Table 1. Truth table.
SW1  SW2   A   B   C
Off  Off   0   0   0
On   Off   1   1   0
Off  On    0   1   1
On   On    1   1   1

then that can be achieved by two 2-pole switches.



simulate this circuit &ndash; Schematic created using CircuitLab
Figure 1. A circuit that gives the switching arrangement of Table 1.