I:
II: y² + 2√17 y - 5² = √68 y

Correct option is E

x² - 5x + 20 = 9x - x²
2x² - 14x + 20 = 0
x² - 7x + 10 = 0
x² - 2x – 5x + 10 = 0
x = 2, 5
II: y² + 2√17 y - 5² = √68 y
y² + 2√17 y - 5² = 2√17 y
y² = 25
y = 5, -5
So, no relation can be established between x and y