What option does the administrator have to modify the change set?

An administrator has uploaded a change set from a sandbox to a production organization and would like to add a missing component to the change set before deployment.

What option does the administrator have to modify the change set? Choose 2 answers.
A . Edit the change set in the sandbox environment and upload it to production.
B. Clone the change set in the sandbox environment, add the component and upload it to production
C. Create a new change set in the sandbox environment, add all the required components and upload it to production
D. Edit the change set in production, add the component, and use the redeploy option.

Answer: B,C