[正答]
B
※国試ナビ4※ [107I020]←[国試_107]→[107I022]
[★]
D
※国試ナビ4※ [107I021]←[国試_107]→[107I023]
※国試ナビ4※ [107I019]←[国試_107]→[107I021]
.