If v, t and are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement

• A. <img src="/_files/images/civil-engineering/advanced-surveying/92-4.139-1.png">
• B. <img src="/_files/images/civil-engineering/advanced-surveying/92-4.139-2.png">
• C. <img src="/_files/images/civil-engineering/advanced-surveying/92-4.139-3.png">
• D. <img src="/_files/images/civil-engineering/advanced-surveying/92-4.139-4.png">