Todos LtdAgrees to Supply United Steel,Inc

Todos Ltd.agrees to supply United Steel,Inc. ,with minerals from Venezuela.When the government is unexpectedly overthrown in a revolution,Todos can obtain the goods only at a much higher price.United agrees to pay but later files a suit to recover the difference.The court will most likely rule that

A) a change in government is a risk ordinarily assumed in business.
B) an unforeseen difficulty supported the contract modification.
C) Todos engaged in extortion or the so-called holdup game.
D) Todos had a preexisting duty to supply the goods at the initial price.