Given the following constructor, identify the correct way$($s$)$ to instantiate an employee object called s$.$

class Employee:

def $\_\_$init$\_\_($self$,$ nm$,$ ttl$,$ identity$=0)$:

self.id $=$ identity

self.name $=$ nm

self.title $=$ ttl

Choice $1$ of $5$: s $=$ employee$()$

Choice $2$ of $5$: s $=$ Employee$(\text{'}$Derek$\text{'})$

Choice $3$ of $5$: s $=$ employee$(\text{'}$Derek Radlad','Executive'$)$

Choice $4$ of $5$: s $=$ Employee$(\text{'}$Derek Radlad','Executive'$)$

Choice $5$ of $5$: s $=$ Employee$(\text{'}$Susan$\text{'},$ 'Radlad','CEO',$999)$