$(a)\;\text{Statement -1 is true; Statement -2 is true ; Statement -2 is a correct explanation for Statement -1} \\ (b)\;\text{Statement -1 is true; Statement -2 is true; Statement -2 is not a correct explanation for Statement -1 } \\(c)\;\text{Statement -1 is true , Statement -2 is false.} \\(d)\;\text{Statement -1 is false , Statement -2 is true} $