Which two relationship queries use the proper syntax? (Choose two.)

Which two relationship queries use the proper syntax? (Choose two.)
A . SELECT Id, Name, Account__r.Name FROM Contact WHERE Account__r.Industry =’Media’
B . SELECT Name, (SELECT LastName FROM Contacts__r) FROM Account
C . SELECT Name, (SELECT LastName FROM Contacts) FROM Account
D . SELECT Id, Name, Account.Name FROM Contact WHERE Account.Industry = ‘Media’

Answer: CD