[Weeds] Cecelia Developed a Product Guaranteed to Immediately Kill Weeds

[Weeds] Cecelia developed a product guaranteed to immediately kill weeds, but will absolutely not kill any other type of grass or shrub. She has encountered several individuals and businesses in other countries who would like to enter into contracts with her and market her products internationally. She consulted with Willie, who just graduated law school and has yet to pass the bar, and asked him for advice regarding those contracts. Willie proceeded to tell her that she should simply enter into the same type of contract with international businesses and individuals from other countries as she would if those individuals and businesses were located in the United States. He tells her that if there is any problem, then they will simply have to come to the United States to settle the matter, and that any issues would be determined in Cecelia's home county, in her home state, and under her state's law. He also mentions to her that she should consider contacting local foreign officials in the areas in which she would like her product sold and suggest to them that she can contribute heavily to election campaigns if she is allowed, without any trouble, to obtain necessary business licenses and approvals to do business.
-If Cecelia does not take Willie at his word and wants additional assurance that her state's law would be applied, what should she do?

A) There is nothing she can do.
B) She should insert a forum selection clause in the contract.
C) She should insert a choice-of-law clause in the contract.
D) She should insert a Hague evidence clause in the contract.
E) She should insert a GATT clause into the contract.