Suppose Southeast Mutual Bank, Walls Fergo Bank, and PJMorton Bank all have zero excess reserves. The required reserve ratio is presently set at 10. Rajlv, a Southeast Mutual Bank customer, deposits $10,000 in cash into his checking account. As a result of this deposit, Southeast Mutual Bank's excess reserves will
1) increase by $10,000
2) decrease by $10,000
3) remain unchanged
4) cannot be determined