$\begin {array} {1 1} (a)\;Both\: the\: statements\: are\: true.\: Statement \: 2\: is \: a \: correct\: explanation\: of \: statement\: 1 \\ (b)\;Both\: the\: statements\: are\: true.\: Statement \: 2\: is \: a \: correct\: explanation\: of \: statement\: 1 \\ (c)\;Statement \: 1 \: is \: true, \: statement\: 2\: is\: false\\ (d)\;Statement \: 2 \: is \: true, \: statement\: 1\: is\: false \end {array}$