1.Let A,B,CA, B, CA,B,C and DDD be four non-empty sets. The contrapositive statement of "If A⊆BA \subseteq BA⊆B and B⊆DB \subseteq DB⊆D, then A⊆CA \subseteq CA⊆C" is:a.If A⊈CA \nsubseteq CA⊈C, then A⊆BA \subseteq BA⊆B and B⊆DB \subseteq DB⊆Db.If A⊆CA \subseteq CA⊆C, then B⊂AB \subset AB⊂A and D⊂BD \subset BD⊂Bc.If A⊈CA \nsubseteq CA⊈C, then A⊈BA \nsubseteq BA⊈B and B⊆DB \subseteq DB⊆Dd.If A⊈CA \nsubseteq CA⊈C, then A⊈BA \nsubseteq BA⊈B or B⊈DB \nsubseteq DB⊈DLogin to continueOnly logged in users canattempt or see the solution.