How can the user configure this?

An organization has configured two single availability zones. The Auto Scaling groups are
configured in
separate zones. The user wants to merge the groups such that one group spans across multiple
zones. How can the user configure this?

A.
Run the command as-join-auto-scaling-group to join the two groups

B.
Run the command as-update-auto-scaling-group to configure one group to span across zones
and
delete the other group

C.
Run the command as-copy-auto-scaling-group to join the two groups

D.
Run the command as-merge-auto-scaling-group to merge the groups

Explanation:
If the user has configured two separate single availability zone Auto Scaling groups and wants to
merge them then he should update one of the groups and delete the other one. While updating the
first group it is recommended that the user should increase the size of the minimum, maximum
and desired capacity as a summation of both the groups.