If Circle is a structure, the statement:

Circle $*$pcirc $=$ nullptr;

A$)$ declares an empty structure variable called $*$pcirc

B$)$ declares a structure pointer called pcirc initialized with a null pointer

C$)$ is illegal in C$++$

D$)$ initializes a null pointer with the value of the Circle pointer

E$)$ None of theseIf Circle is a structure, the statement:

Circle $*$pcirc $=$ nullptr;

A$)$ declares an empty structure variable called $*$pcirc

B$)$ declares a structure pointer called pcirc initialized with a null pointer

C$)$ is illegal in C$++$

D$)$ initializes a null pointer with the value of the Circle pointer

E$)$ None of theseWhich of the following statements outputs the value of the gpa member of element $1$ of the student array?

A$)$ cout $$ student$1.$gpa;

B$)$ cout $$ firstStudent.gpa;

C$)$ cout $$ student$[1].$gpa;

D$)$ cout $$ student$1->$gpa;

E$)$ None of theseWhich of the following statements outputs the value of the gpa member of element $1$ of the student array?

A$)$ cout $$ student$1.$gpa;

B$)$ cout $$ firstStudent.gpa;

C$)$ cout $$ student$[1].$gpa;

D$)$ cout $$ student$1->$gpa;

E$)$ None of theseWhich of the following statements outputs the value of the gpa member of element $1$ of the student array?

A$)$ cout $$ student$1.$gpa;

B$)$ cout $$ firstStudent.gpa;

C$)$ cout $$ student$[1].$gpa;

D$)$ cout $$ student$1->$gpa;

E$)$ None of these