If A={a,b}A = \{a, b\}A={a,b}, what is the power set P(A)P(A)P(A)?
{∅,{a},{b}}\{\emptyset, \{a\}, \{b\}\}{∅,{a},{b}}
{{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}}\{\emptyset, \{a, b\}\}{∅,{a,b}}