Select the two correct statements out of the four $(i-iv)$ given below about lac operon.

$i.$ Glucose or galactose may bind with the repressor and inactivate it.

$ii.$ In the absence of lactose, the repressor binds with the operator region.

$iii.$ The z-gene codes for permease.

$iv.$ This was elucidated by Francois Jacob and Jacque Monod.

• A

  $(ii)\; and\; (iii)$

• B

  $(i)\; and \;(iii)$

• C

  $(ii)\; and\; (iv)$

• D

  $(i)\; and\; (ii)$