Which of the following SQL statement will change the job code (JOB_CODE) to 211 for the person whose employee number (EMP_NUM) is 7 in the EMPLOYEE table?
a. SET JOB_CODE = 211
WHERE EMP_NUM = 7;
b. ALTER JOB_CODE = 211
WHERE EMP_NUM = 7;
c. UPDATE JOB_CODE = 211
WHERE EMP_NUM = 7;
d. UPDATE EMPLOYEE
SET JOB_CODE = 211
WHERE EMP_NUM = 7;