[正答]
D
※国試ナビ4※ [108I019]←[国試_108]→[108I021]
[★]
E
※国試ナビ4※ [108I018]←[国試_108]→[108I020]
※国試ナビ4※ [108I020]←[国試_108]→[108I022]
.