Visa Application

You are developing a case type to process visa applications. As part of the process, applicants
need to schedule an interview with the console. A child case is created for the interview process and
assessment. Following the interview, it typically takes 48 hours for the to reach a decision. For the
visa case to proceed to applicant notification, the interview case needs to be resolved.
How do you configure a case to achieve the required behavior?

A. Add a Create step creates the interview child case, Following the step, add a Wait step that pauses
the parent case unit 48 have elapsed.
B. Add a Create step creates the interview child case, Following the step, add a Wait step that pauses
the parent case unit the interview case reaches a status of Resolved and after 48 hours have elapsed.
C. Add a Create step creates the interview child case, Following the step, add a Wait step that pauses
the parent case unit the interview case status of Resolved.
D. Add a Create step creates the interview child case, There is no need to add a wait step.

I think the correct answer is B. Because 48 hours should elapse and also case should have been resolved.

Can anyone please help with the explaination?