If y = x² - x - 12, find the range of values of x for which y \(\geq\) 0,

• A.-3 < x \(\leq\) 4
• B.x , -3 or x > 4
• C.-3 \(\leq\) x \(\leq\) 4
• D.x \(\leq\) -3 or x \(\geq\) 4
• E.