please explain

X Company prepares monthly financial statements. On September 6, its accountant made an entry that resulted in a $66,000 increase in Cash and a $66,000 decrease in Accounts Receivable. Which of the following transactions is consistent with this entry? X Company sold merchandise to customers on account for $66,000 received $66,000 from a new investor. received $66,000 from a customer who had previously bought merchandise on account. received $66,000 from a customer who bought merchandise with cash. borrowed $66,000 from a bank and signed a note. paid $66,000 to a supplier from whom the firm had previously bought merchandise on account