A It’s present simple, and it’s used to describe a completed action.
B It’s past perfect, and it’s used to describe an ongoing action.
C It’s present perfect, and it’s used to describe an action that started in the past and has relevance in the present.
D It’s present simple, and it’s used to describe a general truth or a state in the present.
E It’s present perfect, and it’s used to describe a completed and repetitive action.