1. Suppose:

table A has columns X and Y.

table B has columns Y and Z

What is true of the query: SELECT A.X, B.Z FROM A, B?

a) The size of the result is the smaller of the sizes (number of rows) of the tables

b) The size of the result is the product of the sizes (number of rows) of the tables

c) The result is empty if there is no overlap in the values of column Y of table A and column Y of table B

d) There are 4 columns in the result