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

Multiple Choice

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

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