Determine the power set P(A)P(A)P(A) for A={a,b}A = \{a, b\}A={a,b}.
{∅,{a},{b},{a,b}}\{\emptyset, \{a\}, \{b\}, \{a, b\}\}{∅,{a},{b},{a,b}}
{{a},{b}}\{\{a\}, \{b\}\}{{a},{b}}
{∅,{a,b}}\{\emptyset, \{a, b\}\}{∅,{a,b}}
{{a},{b},{a,b}}\{\{a\}, \{b\}, \{a, b\}\}{{a},{b},{a,b}}