Match List - I with List.-II.
$\begin{array}{|l|l|l|l|} \hline & \text{List-I} & & \text{List-II} \\ \hline \text { (a) } & \text { Cristae } & \text { (i) } & \text { Primary constriction in chromosome } \\ \hline \text { (b) } & \text { Thylakoids } & \text { (ii) } & \text { Disc-shaped sacs in Golgi apparatus } \\ \hline \text { (c) } & \text { Centromere } & \text { (iii) } & \text { Infoldings in mitochondria } \\ \hline \text { (d) } & \text { Cisternae } & \text { (iv) } & \text { Flattened membranous sacs in stroma of plastids } \\ \hline \end{array}$Select the correct answer from the options given below.