Which of the following principles of cash management is untrue?

Group of answer choices

a. It is generally a mistake to delay paying accounts payable if it means discounts on offer are lost.

b. Generally cash surplus to requirements should be used to acquire necessary non-current assets rather than being kept on fixed deposit.

c. There are disadvantages for a business holding very low levels of inventory.

d. The longer the operating cycle the longer it takes to pay accounts payable.