Change the narration: He said to me, "I was ill".

He told me that he had been ill.

He said to me that I was ill

He said to me that he has been ill.

None of these

He told me that he had been ill.

Rules of Narration Change:

Reporting Verb: "Said to" → "Told" (more natural in reported speech).

Tense Shift: Past ("was") → Past Perfect ("had been") (since the original statement was about a past condition).

Pronoun Shift: "I" → "he" (to match the subject "He").