National Sales Company and Omni Supply Corporation Are Businesses Located

National Sales Company and Omni Supply Corporation are businesses located in different countries. Representatives of National Sales and Omni Supply transact a deal over their cellphones. Under the United Nations Convention on the Use of Electronic Communications in International Trade (ECC) , which National Sales's country has adopted, this deal is​

A) ​as valid and enforceable as a contract on paper.
B) ​invalid because Omni Supply's country has not adopted the ECC.
C) ​invalid because it is not a contract on paper.
D) ​invalid because the businesses are located in different countries.