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