A dog is chasing a cat as shown here. The cat starts from 8 m and jumps 3 m every time. The dog starts from 5 m and jumps 5 m every time. If they both start at the same time, in which jump will the dog overtake the cat?

• A. 1                           
• B. 2             
• C. 3                           
• D. 4                (Olympiad)