Amit tells Bharat in the presence of Chetan that Amit is agent of Chetan. Chetan maintain silence instead of denying it. Later, if Amit sells Chetan's goods to Bharat, Chetan cannot dispute Bharat's title to the goods. This is example of

• A. Sale by official receiver
• B. Sale by a finder of goods
• C. Sale by estoppel
• D. Execution of Sale