a shortage of a mineral used in optical lenses has caused a delay in prototyping. the delay was oringinally estimated at 2 weeks. but due to a shutdown at the mine, the delay is indefinite until another solution can be found. what would be an appropriate step to managing and tracking this issue?
-monitor the issue to collect actual versus planned cost, schedule, and performance information.
-review the issue level and adjust the corrective action plan
-feed the information back to previous process steps
-examine potential changes to the risk