While most of the control of the current site can be reused for the new site, how would you create the new site in the most efficient manner?

A company has an existing English language site for the Canadian market. It is planning to create a new site for the US market.

While most of the control of the current site can be reused for the new site, how would you create the new site in the most efficient manner?
A . Create a live copy from the (ca/en) root to (us/en)
B . Duplicate the site root(ca/en), then move it to the new regional root
C . Copy the site root (ca/en) and paste it in the regional root (us/en)
D . Create a site (us/en) and define the redirect to (ca/en)

Answer: A