The Set of Items Below Was Identified in Preparing a Bank

The set of items below was identified in preparing a bank reconciliation for Mars Corp.as of August 31, 2016. $$\begin{array} { l r } \text { Bank statement balance } & \$ 19,500 \\\text { Mars's book balance (before adjustments) } & ? \\\text { Outstanding checks } & 2,700 \\\text { Customer's NSF checks } & 350 \\\text { Service Charges } & 100 \\\text { Deposits in transit } & 1,000 \\\text { Interest earned on checking account } & 60\end{array}$$ ? Mars Corp.'s balance per books before the reconciliation is

A) $17,410
B) $17,900
C) $18,190
D) $18,310