Record the following transactions on the books of Cullumber Co. (Omit cost of goods sold entries.) (Credit account titles are automatically indented when amount is entered. Do not indent manually.) 

(a) On July 1, Cohen Co. sold merchandise on account to Tracy Inc. for $23,400, terms 2/10, n/30. 

(b) On July 8, Tracy Inc. returned merchandise worth $2,400 to Cohen Co. 

(c) On July 11, Tracy Inc. paid for the merchandise.