Cenozoic Era

Q.

Choose the odd one out from each of the following sets:
$\left(I\right)\text{p}\to \text{Hadean, q}\to \text{Phanerozoic, r}\to \text{Palaeozoic, s}\to \text{Proterozoic}$
$\left(II\right)\text{p}\to \text{Ordovician, q}\to \text{Permian, r}\to \text{Silurian, s}\to \text{Cretaceous}$
$\left(III\right)\text{p}\to \text{Oligocene, q}\to \text{Miocene, r}\to \text{Pliocene, s}\to \text{Permian}$
$\left(IV\right)\text{p}\to \text{Cenozoic, q}\to \text{Palaeozoic, r}\to \text{Jurassic, s}\to \text{Mesozoic}$

1. (I)-r, (II)-p , (III)- q, (IV)- s

2. (I)-r, (II)-s, (III)-s, (IV)-r

3. (I)-p, (II)-q, (III)-r, (IV)-s

4. (I)-s, (II)-r, (III)-p, (IV)-q