Rearrange the following six sentences (A), (B), (C), (D), (E) and (F) in the proper sequence to form a meaningful paragraph; then answer the questions given below them.
A. He immediately acknowledged Mohan's good work and invited him to his home for dinner.
B. One day a wealthy merchant sent his son's bicycle to the shop for repair.
C. The next day the merchant came to claim the bicycle and noticed that it was shiny.
D. After repairing the bicycle, Mohan cleaned it up and made it look new.
E. Once upon a time, there was a boy named Mohan who worked as an apprentice in a bicycle shop.
F. Other apprentices in the shop laughed at Mohan for doing unnecessary work.
Which of the following should be the FOURTH sentence after rearrangement?