Which of the following statements are true?

Select one:

a Once an item assigned with different Units of Measure has been used in a transaction, those units of measure cannot be changed

b Once an item has been setup with assigned Units of Measure, it cannot be marked as inactive

c Once an item has been setup with assigned Units of Measure, it cannot be deleted

d Once an item has been setup with assigned Units of Measure, those units of measure cannot be changed