A. Primary
B. Secondary
C. Ternary
D. Both Primary and Secondary
✅ The correct answer is option D.
Explanation: A primary actor is one having a goal requiring the assistance of the system whereas, a secondary actor is one from which system needs assistance.There is no such thing as ternary actor in Software Engineering.
Explanation: A primary actor is one having a goal requiring the assistance of the system whereas, a secondary actor is one from which system needs assistance.There is no such thing as ternary actor in Software Engineering.