Question

The lens system within a camera forms _______ on the sensor. 

 A. real, inverted image

B. virtual, upright image

C. virtual, inverted image

D. real, upright image

Answer 1

The lens system within a camera forms a real, inverted image
on the sensor.

Virtual images may be visible to us, but they don't register on
film or CCDs, because they're not real.  And I think real images
are always inverted.  (I'm not sure about that part.)