Two labourers L and M start at the same point. L walks 10 m South, then turns left and walks 25 m. In the meanwhile, M walks 20 m West, then turns to his right and walks 15 m, then turns East and walks 45 m. Where is M with respect to L?

• A. 5 m North
• B. 25 m South
• C. 5 m South
• D. 25 m North