Question

One of the following is true

Select one:

a.
(A∪B)c=Ac∪Bc


b.
A∪B=A⇒A−B=ϕ


c.
AB=ϕ⇒A⊂B


d.
A−B=B−A

Answer 1

Answer:

a. true

b. false

c. true

d. false

Answer 2

Answer:

A is a correct answer.

Step-by-step explanation:

please thanks me