Given the options to deal with the security attack, which did Barton and his team prefer and why:

a$.$

To $$do nothing$$ because they were not sure how it started in the first place

b$.$

To $$shut down the company$$ because it was a play$-$it$-$safe option and allowed for rebuilding from development files

c$.$

To $$build a mirror site$$ and shut down the original production systems only after the new site was built.

d$.$

To $$bring in consultants$$ to do an analysis before approaching any changes.