Describe the Conditions Under Which the Statement Is True $\mathrm { A } \cap \mathrm { A } ^ { \prime } = \mathrm { A }$

Multiple Choice

Describe the conditions under which the statement is true.
- $\mathrm { A } \cap \mathrm { A } ^ { \prime } = \mathrm { A }$

A) $\mathrm { A } = \mathrm { U }$
B) Always true
C) $A \neq \varnothing$
D) $A = \varnothing$