Refer to your Expenditions in Reading book for a comeplete version of this text. Which sentence should appear FIRST in an effective summary of Part 3 of "The Adventure of the Blue Carbuncle"?

A. The salesperson at Covent Garden at first refuses to help Holmes, but Holmes tricks him with a wager into revealing where he brought the goose.

B. When he sees how upset the man is, Holmes offers to help John Robinson track down the location of the missing goose.

C. Shortly after leaving the salesperson, Holmes and Watson overhear an argument and return to the scene.

D. The salesperson and man are arguing about the whereabouts of a goose and Holmes offers to help the man.​