Correction of errors

In an accounting system where individual receivables and payables ledger accounts are maintained as an integral part of the double entry system, which of the following errors will not be identified by a trial balance?

A overcasting of the sales day book
B undercasting of the analysed cash book
C failure to transfer a non-current asset to the disposal account when sold
D transposition error in an individual receivables account

Source: Kaplan Study Book

The answer: C

However, IMO it is A because once there is no control account, in the case of over/undercasting in sales day book you cannot detect discrepancy between total of individual accounst and control account which is transferred from sales day book.