LIoyd works as a counter supervisor in the local branch of a national bank. LIoyd is responsible for ensuring that the back’s cash machine has…

LIoyd works as a counter supervisor in the local branch of a national bank. LIoyd is responsible for ensuring that the back’s cash machine has sufficient money. The money for the cash machine has to be from the back’s cash processing center, which supplies new and good quality banknotes. The cash machines can be topped-up with cash from the tills, but the poorer quality banknotes often cause the cash machine to jam. LIoyd has the check the machine’s cash levels and place an order for new notes by 3pm for delivery the following working day. Which is the BEST performance measure for the task Maintain cash machine level’s?