For each of the following items, determine whether the item would be:

a$.$ added to the bank balance

b$.$ subtracted from the bank balance

c$.$ added to the book balance

d$.$ subtracted from the book balance

$11.$ Interest revenue earned

$12.$ NSF check

$13.$ Deposit in transit

$14.$ Service charge

a$.$ added to the bank balance

$15.$ Outstanding check

b$.$ subtracted from the bank balance

c$.$ added to the book balance

d$.$ subtracted from the book balance