Which SQL statement would you execute to get the desired output?

View the Exhibit and examine the description of the EMPLOYEES table.

You want to calculate the total renumeration for each employee. Total renumeration is the sum of the annual salary and the percentage commission earned for a year. Only a few employees earn commission.
Which SQL statement would you execute to get the desired output?
A. SELECT first_name, salary, salary*12+(salary*NVL2 (commission_pct, salary,salary+commission_pct))"Total"
FROM EMPLOYEES;
B. SELECT first_name, salary, salary*12+salary*commission_pct "Total" FROM EMPLOYEES;
C. SELECT first_name, salary (salary + NVL (commission_pct, 0)*salary)*12 "Total" FROM EMPLOYEES;
D. SELECT first_name, salary*12 + NVL(salary,0)*commission_pct, "Total" FROM EMPLOYEES;

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