Alice is managing a project and identifies a high priority risk that the contracting company they have selected may not meet the required schedule, which would delay the completion date. Which of these are mitigation(s) that she could use?

Augment the contract with a penalty if they don't meet the completion date and a bonus if they do

Identify alternative contracting company that could be engaged if the original company delays their start date

Delay the schedule if the contracting company is not available during the target timeframe

All of the above

a and b