The questions below consist of a question followed by two statements numbered I and II. You have to decide whether the statements are sufficient to answer the question. Question: What is the distance between point P and point Q? Statements: I. Point R is 10 m west of point P and point S is 10 m north of point P. II. Point Q is 10 m south-east of point R. Point S is 20 m north-west of point Q.