The Following Exchanges Occurred in a Series of Faxes

The following exchanges occurred in a series of faxes:

Day 1 - "I would be interested in purchasing your citrus grove in Mesa, AZ." /s/ John Duggan
Day 2 - "I might consider selling my citrus grove if the price is right." /s/ Maurice Germaine
Day 3 - "I could offer $3.2 million." /s/ John
Day 4 - "I'll sell." /s/ Maurice

A) The fact that these communications were faxes is irrelevant.
B) The fact that these communications were faxes is irrelevant if the parties follow up with written agreements.
C) The fact that these communications were faxes makes every communication invalid.
D) The fact that these communications were faxes makes them void.