Mr. Gupta was walking along a street at night. He stood at point D and observed that his shadow was cast behind him. He then noticed that the length of his shadow changed as he walked towards the street lamp.
Which one of the following graphs shows the correct changes in the length of the shadow as Mr. Gupta walked from Point D to Point F?
A 
B 
C 
D 
B is the wrong answer. Shouldn't the actual answer be A, as the closer the object is to the light source, more area is blocked and the shadow is bigger?