for the cook county company, the average age of accounts receivable (sales to cash conv.) is 60 days, the average age of accounts payable (purchase to pmt.pd.) is 45 days, and the average age of inventory (inventory to sales conv.) is 72 days. Assuming a 360- day year, what is length of the firm's cash conversion cycle?

A)87 days

b)90 days

c)65 days

d)48 days

e)66 days

please choose the correct answer