A company received a bank statement with a balance of 6,350 dollars. Reconciling items included a bookkeeper error of 300 dollars,a 300 dollars check recorded as 600 dollars-two outstanding checks totaling 820 dollars,a service charge of 25 dollars,a deposit in transit of 280 dollars and interest revenue of 31 dollars. What is the adjusted book balance ?

a)4,450 dollars b)4,106 dollars c)3,894 dollars d)3,460 dollars