Kellie's Date of Possession for the Home She Recently Purchased

Kellie's date of possession for the home she recently purchased is October 1.Her lawyer instructed her to provide the cash to close by way of a certified cheque in the amount of $35 000,payable to "Sheps & Shaps LLP in trust," by September 29.Why did Kellie's lawyer require the payment of these funds in this manner?

A) It prevents the drawee from requesting a stop payment on the cheque.
B) A cheque is a self contained obligation,independent of any outside circumstances.
C) The major risk involved with cheques relates to the financial health of the drawee.
D) Risk is eliminated,as the payment of funds from bank reserves is guaranteed.