A magnifying glass with a focal length of 6.0 cm is held 2.0 cm in front of an observer’s eye. The observer’s near point is 25 cm from the eye. What is the closest distance from the lens at which an object can be placed while still allowing the observer to see a clear, upright image at the near point?
a) 7.7cm
b) 6.0cm
c) 4.8cm
d) 8.1cm