Answer:
Option (B) is correct.
Explanation:
Implicit costs refers to the opportunity cost that is associated with the selection of the alternative.
In this question, the Rosa wants to migrate to another country, if she do so then she have to foregone her earnings in the home country.
Therefore, Rosa's stream of future earnings in her home country is $500,000 and it is considered as implicit cost. She give up this much of income to earn $800,000.
Explicit costs includes:
(i) Transportation = $5,000
(ii) Application and other processing fees = $4,000