The Following Transactions Have Been Journalized and Posted to the Proper

The following transactions have been journalized and posted to the proper accounts.
1)Mark Call invested $7,000 cash in his new design services business.
2)The business paid the first month's rent of $700.
3)The business purchased equipment by paying $2,000 cash and executing a note payable for $4,500.
4)The business purchased supplies for $850 cash.
5)The business billed a client for $4,000 of design services completed.
6)The business received $3,000 of the account for the completed services.
What is the balance in Cash?
A) $7,850
B) $6,450
C) $8,450
D) $8,150