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

• A.x < -3 0r x > 4
• B.x \( \leq \) -3 or x \( \geq \) 4
• C.-3 < x \( \geq \) 4
• D.-3 \( \leq \) x \( \leq \) 4
• E.