Rishaan, who owns a wholesale supply business, has just sold $8,200 in merchandise to Clara for inventory in her styling salon. In return, Clara has signed a pledge to Rishaan to pay the $8,200, plus a designated rate of interest, one year from the date of the sale. Which of the following represents the arrangement between Clara and Rishaan? 

A promissory note

A revolving credit agreement 

Zero-base budgeting 

A line of credit