In an International Contract, a Force Majeure Clause

In an international contract, a force majeure clause:

A) specifies the contingencies in the event of a specified occurrence contemplated by the parties during the negotiation of the contract
B) may not be included in a contract for the sale of services
C) is triggered solely by economic rather than social and political activities and events
D) an integral part of the arbitration provision when third world governments are involved in the contract
E) none of the other choices