Choose the most appropriate option which best expresses the same sentence in Indirect/Direct speech. He said, "Sita, when is the next train?"

He said to Sita when the next train was. He asked Sita when the next train was. He asked Sita about the next train. He asked when the next train is.

He asked Sita when the next train was.

The correct answer is Option (2) - He asked Sita when the next train was.