Choose the most appropriate option to change the narration (direct / indirect) of the given sentence.
The commander said, “Keep marching till you reach the border."

A

The commander ordered his men to keep marching till they reached the border.

B

The commander requested the men keep marching till they reach the border.

C

The commander said the men should keep marching till they reach the border.

D

The commander said to his men they should keep marching till you reach the border.