Choose the option which is nearest in meaning to the sentences in each of the following questions:
For all he cared, his parent might have been dead for years

• A.although concern about his parent,he had been unable to find out if they were alive
• B.He cared for no one except his parents, and it was possible that they had died long before
• C.he did not care whether his parents were alive or had died long before
• D.He was concerned about everyone not just his parents, who might have died long before
• E.He cared very much for his parents even though they were dead