[正答]
D
※国試ナビ4※ [099E018]←[国試_099]→[099E020]
[★]
A
※国試ナビ4※ [099E017]←[国試_099]→[099E019]
※国試ナビ4※ [099E019]←[国試_099]→[099E021]
.