By completing the square, solve the following equation.
x² - 20x = 7

• A. x = 10 + √107, 10 - √107
• B. x = - 10 + √107, - 10 - √107
• C. x = 10 + √17, 10 - √17
• D. x = - 10 + √17, - 10 - √17

Answer: (A)