Solve the differential equation ((15xy - 5y²) + (5x² - 5xy)y' = 0) using the integrating factor (p(x, y) = xy(8x - 4y)).
a) (y = C/x⁴)
b) (y = Ce2/x)
c) (y = Ce-2/x)
d) (y = Ce-1/x²)