[正答]
A
※国試ナビ4※ [110I019]←[国試_110]→[110I021]
[★]
B
※国試ナビ4※ [110I020]←[国試_110]→[110I022]
C
※国試ナビ4※ [110I018]←[国試_110]→[110I020]
.