Q: What are castros?
 A: Numerous Roman sites are scattered around present-day Portugal, some urban remains are quite large, like Conímbriga and Mirobriga.
 Does the answer correctly answer the question

Available choices:
 1). yes.
 2). no.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
2).