Observe the ENROLLMENT AND COURSE database:

ENROLLMENT

EmpID

EmpName

CourseID

$111$

Joe

AMG

$222$

Bob

AMG

$333$

Lisa

PMG

$444$

Sue

AMG

COURSE

CourseID

CourseName

AMG

Anger Management

PMG

Project Management

How many rows will the following query return?

SELECT courseid, count$(*)$ FROM enrollment

GROUP BY courseid;

$0$

$1$

$2$

$3$

$4$