A police party is chasing a dacoit in a jeep which is moving at a constant speed v. The dacoit is on a motorcycle. When he is at a distance x from the jeep, he accelerates from rest at a constant rate. Which of the following relations is true if the police is able to catch the dacoit?

• A. \[{{v}^{2}}\le \alpha x\]          
• B. \[{{v}^{2}}\le 2\alpha x\]
• C. \[{{v}^{2}}\ge 2\alpha x\]        
• D. \[{{v}^{2}}\ge \alpha x\]