If x=0.5x = 0.5x=0.5 and y=0.25y = 0.25y=0.25, which of the following expressions equals 1.01.01.0?
xy\frac{x}{y}yx
x+yy\frac{x+y}{y}yx+y
xy−1\frac{x}{y} - 1yx−1
x2÷y2x^2 \div y^2x2÷y2