During February 2010, its first month of operations, the owner of Schwenn Enterprises invested cash of $25,000. Schwenn had cash sales of $4,000 and paid expenses of $7,000. Assuming no other transactions impacted the cash account, what is the balance in Cash at February 28? (Points : 4) a)$3,000 credit b)$22,000 debit c)$29,000 debit d)$18,000 credit