Which table represents a quadratic function? A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 6, 3, 2, 3, 6. A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries negative 5, negative 3, negative 1, 1, 3. A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries negative 9, negative 4.5, 0, 4.5, 9. A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 0.25, 0.5, 1, 2, 4.