Select the $\text{WRONG}$ statement regarding water gas shift converters from the list below.

1. Inter-stage cooling is provided between the two stages of shift converters
2.  Usually high temperature shift $\text{(HTS)}$ reactor has a iron-based catalyst and low temperature shift $\text{(LTS)}$ reactor has a copper-based catalyst.
3. $\text{HTS}$ reactor is followed by $\text{LTS}$ reactor
4. $\text{LTS}$ reactor is followed by $\text{HTS}$ reactor.