The sequential service constraint feature in a deposit contract implies that
a. the amount that the bank pays to a withdrawing depositor depends on what was promised by the bank and on their place in the queue of depositors wishing to withdraw.
b. the amount that the bank pays to a withdrawing depositor depends only on what the bank promised.
c. the amount that the bank pays to a withdrawing depositor depends on what was promised by the bank and how long the queue of withdrawing depositors is.
d. the amount that the bank pays to a withdrawing depositor depends only on how much money the bank has at the time.