Consider the following SQL query:(SELECT DISTINCT PnumFROM PROJ, DEPT, – McqOptions

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1.	Consider the following SQL query:(SELECT DISTINCT PnumFROM PROJ, DEPT, EMP WHERE Dnum = DnumberAND Mgr_ssn = Ssn AND Lname=’XXXX’)UNION(SELECT DISTINCT Pnum FROM PROJ, WORKS_ON, EMP WHERE Pnum=Pno AND ESSn=SsnAND Lname=’XXXX’)
A.	all project numbers for projects that involve an employee with last name ‘XXXX’, either as worker or as manager
B.	all project numbers for projects that involve an employee with last name ‘XXXX’ as manager
C.	records of all employees with last name as ‘XXXX’ working in a project as manager
D.	All project numbers for projects in department Dnumber and where ‘XXXX’ is involved either as worker or as manager
Answer» B. all project numbers for projects that involve an employee with last name ‘XXXX’ as manager

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