Let A={1,2}A = \{1, 2\}A={1,2}. Which of these is a power set P(A)P(A)P(A)?
∅\emptyset∅
∅,{1},{2}\emptyset, \{1\}, \{2\}∅,{1},{2}
∅,{1},{2},{1,2}\emptyset, \{1\}, \{2\}, \{1, 2\}∅,{1},{2},{1,2}
∅,{1,2}\emptyset, \{1, 2\}∅,{1,2}