A small straight rod is placed at an inclination with the optical axis of a thin lens as shown in the figure. The base of the rod is on the optical axis and at a distance 2f(f= focal length of the lens) from the lens. The image of the rod would be

• A. a straight line leaning towards the lens
• B. a straight line leaning away from the lens
• C. a curve leaning towards the lens
• D. a curve leaning away from the lens