Consider a database with two tables, created with the following commands:

CREATE TABLE T$1($X INT NOT NULL,

PRIMARY KEY$($X$)$

$)$;

CREATE TABLE T$2($Y INT NOT NULL, Z INT NOT NULL,

PRIMARY KEY$($Y$),$

FOREIGN KEY$($Y$)$ REFERENCES T$1($X$)$ ON DELETE CASCADE

$)$;

Assume many rows have been added to each of the tables.

Which of the following is guaranteed to be true? Select all that apply.

Hint: consider how the foreign key and both primary keys limit what rows are valid in the tables.

Group of answer choices

The number of rows in T$1$ is $<=$ the number of rows in T$2$

The number of rows in T$2$ is $<=$ the number of rows in T$1$

The maximum number of unique Z values is equal to the number of X values

The minimum number of unique Z values is $0$