You need to meet the technical requirements for EFS on ComputerA.
What should you do
A. Run certutil.exe, and then add a certificate to the local computer certificate store.
B. Run cipher.exe, and then add a certificate to the local computer certificate store.
C. Run cipher.exe, and then add a certificate to the local Group Policy.
D. Run certutil.exe, and then add a certificate to the local Group Policy.