Playtron Industries Has Rented Its Business Headquarters from Novell Realtors

Playtron Industries has rented its business headquarters from Novell Realtors for the past two years. With the third year approaching, Novell decides to raise its £9,000 per month rent to £9,800. The assistant writes to Playtron, but accidentally types £8,900 instead of £9,800. When Playtron receives the offer, they are pleasantly surprised and they immediately accept. Novell realizes the mistake they made upon the receipt of this acceptance and calls Playtex to correct the offer. Have the parties contracted and, if so, for which price?

A) Yes, for £9,800.
B) Yes, for £8,900.
C) Yes, for £9,000.
D) No, the parties have not contracted.