There is a "Student" class $($subclass of "User" class$)$ already running in IRAS

app. Now, if UGC gives permission to IUB tomorrow to offer Ph$.$D degree,

then we need to extend the "Student" class to have "ResearchStudent"

class. Now the question is: do we need to make the "Student" an abstract

class?

Yes

No

Logically Doesn't matter

Employee is the abstract super class. Accountant, SalesExecutive &

MarketingManager are subclasses of Employee. Now paySalary$()$ qualifies

to be an abstract method of Employee class

true

false