A Team Has Been Given a Project Which Requires Them

A team has been given a project which requires them to design a new product with the following key performance indicators (KPIs) and prototype results: What should be the next step of the project?

A) Close prototype phase and move to production phase
B) Stay in prototype phase and issue formal corrective action to address prototype yield only
C) Stay in prototype phase and issue formal corrective action to address all key performance indicators
D) Close prototype phase and move to production phase with verbal understanding that yield needs to increase