A man starts from a certain point O and follows the route as shown in the graph. Which of the following statements is correct ?

Question

https://drive.google.com/file/d/0B_UYTZVc4r4mdFRZOGREUEE4NVk/view?usp=sharing
( A ) He travels with a greater velocity from O to A than from A to B
( B ) He travels with a uniform velocity throughout
( C ) He returns to the original point with a non-uniform velocity
( D ) He travels with a greater velocity from A to B than from O to A