Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE enroll ( stu_num VARCHAR, enroll_grade VARCHAR )
TABLE: CREATE TABLE student ( stu_fname VARCHAR, stu_lname VARCHAR, stu_num VARCHAR )

### Question ###
Find names of all students who took some course and got A or C.

### Accurate SQL ###

SELECT T1.stu_fname, T1.stu_lname FROM student AS T1 JOIN enroll AS T2 ON T1.stu_num = T2.stu_num WHERE T2.enroll_grade = 'C' OR T2.enroll_grade = 'A'