Which of the following equations are quadratic equations?I) x2 + 4x + 23 = x + 33 / 28II) 2x2 / 3 + 6x + 2 = x2 + 8III) 6x2 + 4x + 18 = 6x2 - 6x

• A. I & II
• B. I, II & II
• C. I & III
• D. II & III