What is the command sfdx copado:auth:set -a [myOrgAlias] used for?

What is the command sfdx copado:auth:set -a [myOrgAlias] used for?
A . It is used to link the Copado CLI with the org where Copado is installed.
B . It is used to log in to the org where Copado is installed.
C . It is used to authenticate the org credential of the org where Copado is installed.
D . It is used to install the Copado CL

Answer: A