Choose the set of verbs that best completes the narrative with consistent and logical tenses: The old detective _____ at the dusty crime scene. Rain _____ against the windows while he _____ for clues. He realized he _____ a similar case years ago.

A. arrived, was beating, looked, had seen

B. arrives, is beating, looks, saw

C. had arrived, beat, was looking, has seen

D. was arriving, beat, had looked, saw