Why should all requirements must be enumerated uniquely?

Question $10$ options:

a$)$

Traceable

b$)$

Identifiable

c$)$

Categorized

d$)$

All of these are correct.Why should all requirements must be enumerated uniquely?

Question $10$ options:

a$)$

Traceable

b$)$

Identifiable

c$)$

Categorized

d$)$

All of these are correct.