Number Owner Balance Type 101 John Smith 1000.00 checking 102 Werner Wei 2000.00 checking 103 John Smith 1000.00 savings 104 Muhammad Jones 1000.00 checking 105 Hugh Martin 10,000.00 checking   What is the result of the following query for the relation Account? SELECT DISTINCT Owner FROM Account Note that we are representing the result as a set {...} of tuples (...), with each attribute explicitly listed along with its value.单项选择题

{(Owner: “John Smith”), (Owner: “Werner Wei”), (Owner: “Muhammad Jones”), (Owner: “Hugh Martin”)}

{(Number: 101, Owner: “J. Smith”), (Number: 102, Owner: “W. Wei”), (Number: 103, Owner: “J. Smith”), (Number: 104, Owner: “M. Jones”), (Number: 105, Owner: “H. Martin”)}

{(Number: 101, Owner: “John Smith”), (Number: 102, Owner: “Werner Wei”), (Number: 103, Owner: “John Smith”), (Number: 104, Owner: “Muhammad Jones”), (Number: 105, Owner: “Hugh Martin”)}

{(Owner: “J. Smith”), (Owner: “W. Wei”), (Owner: “M. Jones”), (Owner: “H. Martin”)}

{(Owner: “John Smith”), (Owner: “Werner Wei”), (Owner: “John Smith”), (Owner: “Muhammad Jones”), (Owner: “Hugh Martin”)}