Q. What does the “x” operator do in relational algebra?

• (A) Output specified attributes from all rows of the input relation. Remove duplicate tuples from the output
• (B) Output pairs of rows from the two input relations that have the same value on all attributes that have the same name
• (C) Output all pairs of rows from the two input relations (regardless of whether or not they have the same values on common attributes)
• (D) Returns the rows of the input relation that satisfy the predicate