Audrey has a box that contains one caramel chocolate (c), one milk chocolate (m), one dark chocolate (d), and one white chocolate (w). she picks one chocolate and eats it. then she picks another chocolate and eats it. what is the sample space of the event?
{m-d, m-w, m-c, d-w, d-c, w-c}
{m-d, m-w, m-c, d-m, d-c, d-w, w-m, w-c, w-d, c-m, c-d, c-w}
{m-d, m-w, m-m, d-m, d-c, d-d, w-m, w-w, w-d, c-m, c-d, c-c}
{m-d, m-w, m-c, m-m, d-m, d-c, d-w, d-d, w-m, w-c, w-d, w-w, c-m, c-d, c-w, c-c}