You are adding a public method named UpdateGrade to a public class named ReportCard.
The code region that updates the grade field must meet the following requirements:
It must be accessed by only one thread at a time.
It must not be vulnerable to a deadlock situation.You need to implement the UpdateGrade() method.
What should you do?
A.
Option A
B.
Option B
C.
Option C
D.
Option D