The bank statement for Trainum Company contained the following items: a bank service charge of $70; a credit memo for interest earned, $75; and a $170 NSF check from one of Trainum customers. Outstanding checks amounted to $400 ; a deposit in transit was $900.

Assuming that the unadjusted bank balance was $1,800, determine the unadjusted book balance.

A. 2,300

B.1,635

C. 2,700

D.2,465