There are 42 chocolates in the box, all identically shaped. There 16 are filled with nuts, 12 with caramel, and 14 are solid chocolate. You randomly choose one piece, eat it, and then choose a second piece. Determine the probability of selecting 2 solid chocolates in a row.
a) 1/123
b) 13/123
c) 13/126
d) 1/9