In the Contract Between Canada Oil Company and the Government

In the contract between Canada Oil Company and the Government of Iran for the supply of Iranian crude oil, there is a clause that allows either party a period of one year to bring forward to court any claim arising from events subject to the contract. Any claim raised after one year from the events which give rise to it is agreed to be unenforceable. Had the parties not provided for this themselves, the common law would have provided a somewhat similar measure, represented by the doctrine of

A) force majeure.
B) option to terminate.
C) condition subsequent.
D) condition precedent.
E) frustration.