What is the result?

Consider the my_table table with these contents:

You execute:
SELECT 1 FROM my_table;
What is the result?

Consider the my_table table with these contents:

You execute:
SELECT 1 FROM my_table;
What is the result?

A.
A single value: 1

B.
Two values: 1, 1

C.
Two values: 11, 12

D.
Two values: 11, 13

E.
An error message