A seller is awarded a contract to build a pipeline. The contract terms and conditions require that a work plan be issued for the buyer's approval prior to commencing work, but the seller fails to provide one. Which of the following is the BEST thing for the buyer's project manager to do?
A、File a letter of intent.
B、Develop the work plan and issue it to the seller to move things along.
C、Issue a default letter.
D、Issue a stop work order to the seller until a work plan is prepared.