Urban Bloom, Inc.'s books show an ending cash balance of $18,000 before preparing the bank reconciliation. Given the bank reconciliation shows outstanding checks of $5,400, deposits in transit of $3,600, NSF check of $180, and interest earned on the bank account of $18, the company's up-to-date ending cash balance equals:

A) $12,438.
B) $17,838.
C) $16,038.
D) $18,198.