The focal lengths of the objective and the eye-piece of a compound microscope are $2.0 \, cm$ and $3.0 \, cm$ respectively. The distance between the objective and the eye-piece is $15.0 \, cm$. The final image formed by the eye-piece is at infinity. The two lenses are thin. The distances in $cm$ of the object and the image produced by the objective measured from the objective lens are respectively:

• A
  $2.4$ and $12.0$
• B
  $2.4$ and $15.0$
• C
  $2.3$ and $12.0$
• D
  $2.3$ and $3.0$