Question

Suppose u and v both denote sets in Python. Under what condition can we guarantee that u - (v - u) == u?
A.)This is true for any u and v.
B.) The set u should be a subset of v.
C.)The set v should be a subset of u.
D.)The sets u and v should be disjoint.

Answer 1

the right answer is a

Answer 2

When u and v both denote sets in Python, it means that the condition of  u - (v - u) == u? is true for any u and v.

It means that no matter what the values of u and v may be  in the question but it will always hold true for the given condition but only when it is the set in Python.