Define the ADT stack as a derived class from the ADT FrontList using private inheritance $($AsA relationship$).$ Which of the following answers is the correct class definition?

Question $5$ options:

a$)$

template

class StackAsA : private FrontList

$\{$

Public:

StackAsA $()$;

StackAsA $($const StackAsA & aStack$)$;

virtual ~ StackAsA $()$;

bool isEmpty$()$ const;

bool push$($const ItemType& newItem$)$;

bool pop$()$;

ItemType peek$()$ const throw$($PrecondViolatedExcep$)$;

$\}$;

b$)$

template

class StackAsA

$\{$

private:

FrontList fList;

Public:

StackAsA $()$;

StackAsA $($const StackAsA & aStack$)$;

virtual ~ StackAsA $()$;

bool isEmpty$()$ const;

bool push$($const ItemType& newItem$)$;

bool pop$()$;

ItemType peek$()$ const throw$($PrecondViolatedExcep$)$;

$\}$;

c$)$

template

class StackAsA : private FrontList

$\{$

Private:

Node$*$ topPtr;

Public:

StackAsA $()$;

StackAsA $($const StackAsA & aStack$)$;

virtual ~StackAsA$()$;

bool isEmpty$()$ const;

bool push$($const ItemType& newItem$)$;

bool pop$()$;

ItemType peek$()$ const throw$($PrecondViolatedExcep$)$;

$\}$;

d$)$

template

class StackAsA: private FrontList

$\{$

private:

FrontList fList;

Public:

StackAsA $()$;

StackAsA $($const StackAsA & aStack$)$;

virtual ~ StackAsA $()$;

bool isEmpty$()$ const;

bool push$($const ItemType& newItem$)$;

bool pop$()$;

ItemType peek$()$ const throw$($PrecondViolatedExcep$)$;

$\}$;