Martin is a production manager at a soda manufacturing and bottling plant. One of his duties is to create a monthly inventory report based on the list of material received the supplier on delivery. Sandra's report for the previous month, however, turned out to be very expensive $($over US$$1,200)$ only for $10$ pages of report. In this scenario, this report cannot be considered good information as it was lacking in $\_\_\_\_\_\_\_\_.$

one:

a$.$ worthy of cost

b$.$ relevancy

c$.$ sufficiency

d$.$ accuracy