@Superstani
Negative confirmations provide less assurance than positive confirmations. When negative confirmations are not received back the balance is assumed to be fairly stated. If a customer does not return a negative confirmation because they don't have time/don't care but the balance is actually misstated, this will not be detected by the auditors confirmation process.
Positive confirmations require the customer to respond saying yes/no the balance is correct. For positive confirmations they can either list out the account balance/invoices related to the customer OR they can leave them blank. In a perfect scenario, Blank Positive Confirmations provide the MOST assurance. However, because the amount of work the customer must do in researching and finding the correct balance, using these types of confirmations increases the chance customers will not respond.
My interpretation of that question (it's from Becker right?) was that because of the chance the customers will just sign off on the positive confirmations without giving them any consideration, that will not provide the level of assurance desired from positive confirmations since the point is that you want the customers to actually investigate and agree with the balance. So you upgrade to the blank confirmations, forcing them to actually investigate what the balance is supposed to be.
I originally got this question wrong too.
AUD: 99 (11/26/2014)
BEC: 1/5/2015
REG: 2/27/2015
FAR: 5/18/2015
Using Becker Review, but will add Ninja MCQ for FAR®.