The Following Transactions for the Month of March Have Been $\$ 9,000$

The following transactions for the month of March have been journalized and posted to the proper accounts. Mar, 1 The business received $\$ 9,000$ cash and issued common stock to stockholders.
Mar. 2 Paid the first month's rent of $\$ 900$ .
Mar. 3 Purchased equipment by paying \$3,000 cash and expcuting a note payable for $7,000.
Mar. 4 Purchased office supplies for $\$ 730 \mathrm { cash }$ .
Mar. 5 Eilled a client for \$10,000 of design services completed.
Mar. 6 Received $\$ 7,900$ on account for the services previously recorded. What is the balance in Cash?

A) $13,170
B) $12,270
C) $15,270
D) $13,900