An 107-mm-focal-length lens is used to focus an image on the sensor of a camera. The maximum distance allowed between the lens and the sensor plane is 134 mm. A: How far in front of the sensor should the lens (assumed thin) be if the object to be photographed is 10.0 m away from the lens? Follow the sign conventions.

B: How far in front of the sensor should the lens (assumed thin) be if the object to be photographed is 3.0 m away from the lens? Follow the sign conventions.

C: How far in front of the sensor should the lens (assumed thin) be if the object to be photographed is 1.0 m away from the lens? Follow the sign conventions.

D: What is the closest object this lens could photograph sharply? Follow the sign conventions.