[正答]
B
※国試ナビ4※ [110I020]←[国試_110]→[110I022]
[★]
A
※国試ナビ4※ [110I021]←[国試_110]→[110I023]
※国試ナビ4※ [110I019]←[国試_110]→[110I021]
.